Microsoft Windows Server 2012 R2 Vulnerabilities
Fix Microsoft Windows Server 2012 R2 on Windows Server
74 entries · Windows Server · Sorted by severity
Showing 1–74 of 74 results
| Severity | Title | CVSS | |||||
|---|---|---|---|---|---|---|---|
CRITICAL | KB4507448: Windows Server 2012 R2 Security Update (July 2019)Windows DHCP Server — Unauthenticated Network RCE (A memory corruption in DHCP failover packet handling)Microsoft Windows Server 2012 R2 | CVE-2019-0785 | 9.8 | No confirmed in-the-wild exploitation at time of writing. | Reboot Required | Script | |
CRITICAL | KB4512488: Windows Server 2012 R2 Security Update (August 2019)Bluetooth BR/EDR Key Negotiation ("KNOB") — Encryption Downgrade AttackMicrosoft Windows Server 2012 R2 | CVE-2019-9506 | 9.3 | Public proof-of-concept code on GitHub (francozappa/knob). No confirmed targeted in-the-wild exploitation at time of writing. | Reboot Required | Script | |
CRITICAL | KB4512488: Windows Server 2012 R2 Security Update (August 2019)Windows DHCP Server — Memory Corruption Denial of Service (RCE Potential)Microsoft Windows Server 2012 R2 | CVE-2019-1212 | 9.8 | No confirmed in-the-wild exploitation at time of writing. Microsoft classified the official impact as denial of service but assigned a CVSS 9.8 because of the underlying memory corruption. | Reboot Required | Script | |
CRITICAL | KB4534297: Windows Server 2012 R2 Security Update (January 2020)Windows Remote Desktop Gateway ("BlueGate") — Companion UDP RCE on Port 3391Microsoft Windows Server 2012 R2 | CVE-2020-0610 | 9.8 | Companion to CVE-2020-0609 — patched together. PoCs available. ~15,500 internet-exposed RD Gateways at disclosure. | Reboot Required | Script | |
CRITICAL | KB4601384: Windows Server 2012 R2 Security Update (February 2021)Windows DNS Server — Unauthenticated RCE (A heap-based buffer overflow) — Requires Dynamic UpdatesMicrosoft Windows Server 2012 R2 | CVE-2021-24077 | 9.8 | No confirmed in-the-wild exploitation at time of writing. Part of a series of seven DNS Server RCEs patched together in March 2021 — McAfee published a research summary ("Seven Windows Wonders"). | Reboot Required | Script | |
CRITICAL | KB4601384: Windows Server 2012 R2 Security Update (February 2021)Windows DNS Server — Unauthenticated RCE (An out-of-bounds write in dynamic-update parsing) — Requires Dynamic UpdatesMicrosoft Windows Server 2012 R2 | CVE-2021-24078 | 9.8 | No confirmed in-the-wild exploitation at time of writing. Part of a series of seven DNS Server RCEs patched together in March 2021 — McAfee published a research summary ("Seven Windows Wonders"). | Reboot Required | Script | |
CRITICAL | KB4601384: Windows Server 2012 R2 Security Update (February 2021)Windows TCP/IP IPv6 — Unauthenticated RCE / DoS via Crafted IPv6 PacketsMicrosoft Windows Server 2012 R2 | CVE-2021-24094 | 9.8 | No confirmed in-the-wild exploitation at time of writing. Microsoft assessed exploit development as complex for RCE; DoS is more straightforward. | Reboot Required | Script | |
CRITICAL | KB5003671: Windows Server 2012 R2 Security Update (June 2021)Kerberos AppContainer Security Feature Bypass — Capability Check SkippedMicrosoft Windows Server 2012 R2 | CVE-2021-31962 | 9.4 | No confirmed in-the-wild exploitation at time of writing. | Reboot Required | Script | |
CRITICAL | KB5012670: Windows Server 2012 R2 Security Update (April 2022)Windows Network File System (NFS) — Unauthenticated RCE (A companion NFS RCE patched alongside CVE-2022-24491)Microsoft Windows Server 2012 R2 | CVE-2022-24497 | 9.8 | Public PoC and analysis available (ZDI, Trend Micro, fortra). No confirmed in-the-wild exploitation at time of writing for CVE-2022-24497 specifically. | Reboot Required | Script | |
CRITICAL | KB5014011: Windows Server 2012 R2 Security Update (May 2022)Windows Network File System (NFS) — Unauthenticated RCE (A stack buffer overflow in NLM Portmap handling — GETADDR RPC response is crafted by the attacker)Microsoft Windows Server 2012 R2 | CVE-2022-26937 | 9.8 | Public PoC and analysis available (ZDI, Trend Micro, fortra). No confirmed in-the-wild exploitation at time of writing for CVE-2022-26937 specifically. | Reboot Required | Script | |
CRITICAL | KB5014011: Windows Server 2012 R2 Security Update (May 2022)Windows LDAP — Remote Code Execution (Requires Non-Default MaxReceiveBuffer)Microsoft Windows Server 2012 R2 | CVE-2022-22012 | 9.8 | No confirmed in-the-wild exploitation at time of writing. Exploit conditions are narrow (non-default MaxReceiveBuffer). | Reboot Required | Script | |
CRITICAL | KB5014011: Windows Server 2012 R2 Security Update (May 2022)Windows LDAP — Remote Code Execution (Requires Non-Default MaxReceiveBuffer)Microsoft Windows Server 2012 R2 | CVE-2022-29130 | 9.8 | No confirmed in-the-wild exploitation at time of writing. Exploit conditions are narrow (non-default MaxReceiveBuffer). | Reboot Required | Script | |
CRITICAL | KB5014738: Windows Server 2012 R2 Security Update (June 2022)Windows Network File System (NFS) — Unauthenticated RCE (A size-calculation error in NFSv4.1 COMPOUND requests that under-allocates the response buffer and overflows it when populating fields)Microsoft Windows Server 2012 R2 | CVE-2022-30136 | 9.8 | Public PoC and analysis available (ZDI, Trend Micro, fortra). No confirmed in-the-wild exploitation at time of writing for CVE-2022-30136 specifically. | Reboot Required | Script | |
CRITICAL | KB5016681: Windows Server 2012 R2 Security Update (August 2022)Windows Point-to-Point Protocol (PPP) — Unauthenticated Network RCE on RRAS ServersMicrosoft Windows Server 2012 R2 | CVE-2022-30133 | 9.8 | No confirmed in-the-wild exploitation at time of writing. | Reboot Required | Script | |
CRITICAL | KB5016681: Windows Server 2012 R2 Security Update (August 2022)Windows Point-to-Point Protocol (PPP) — Unauthenticated Network RCE on RRAS ServersMicrosoft Windows Server 2012 R2 | CVE-2022-35744 | 9.8 | No confirmed in-the-wild exploitation at time of writing. | Reboot Required | Script | |
CRITICAL | KB5017367: Windows Server 2012 R2 Security Update (September 2022)Windows TCP/IP IPv6 Reassembly — Unauthenticated RCE on IPsec Hosts ("EvilESP")Microsoft Windows Server 2012 R2 | CVE-2022-34718 | 9.8 | Public technical analysis from IBM X-Force ("EvilESP"). No confirmed in-the-wild exploitation at time of writing. | Reboot Required | Script | |
CRITICAL | KB5017367: Windows Server 2012 R2 Security Update (September 2022)Windows IKE Protocol Extensions — Unauthenticated RCE (A companion vulnerability to CVE-2022-34721 in the same IKE / IPsec protocol extensions (September 2022 patch cycle))Microsoft Windows Server 2012 R2 | CVE-2022-34722 | 9.8 | Public proof-of-concept research available (micropatches and PoCs published). No confirmed in-the-wild exploitation for this specific CVE at time of writing. | Reboot Required | Script | |
CRITICAL | KB4512488: Windows Server 2012 R2 Security Update (August 2019)Windows Remote Desktop Services (RDP) — Wormable Pre-Auth RCE ("DejaBlue")Microsoft Windows Server 2012 R2 | CVE-2019-1181 | 9.8 | No confirmed in-the-wild worm at time of writing, but the same protocol layer was the target of BlueKeep (CVE-2019-0708). PoC research has been published. | Reboot Required | Script | |
CRITICAL | KB5012670: Windows Server 2012 R2 Security Update (April 2022)Windows RPC Runtime Library — Wormable Unauthenticated RCE on TCP 445Microsoft Windows Server 2012 R2 | CVE-2022-26809 | 9.8 | Public proof-of-concept code available (websecnl/CVE-2022-26809 on GitHub). Microsoft classified the vulnerability as wormable. Shodan counted 700,000+ internet-exposed hosts at disclosure. | Reboot Required | Script | |
CRITICAL | KB5041828: Windows Server 2012 R2 Security Update (August 2024)Windows Reliable Multicast Transport Driver (RMCAST) — Use-After-Free RCEMicrosoft Windows Server 2012 R2 | CVE-2024-38140 | 9.8 | No confirmed in-the-wild exploitation at time of writing. Closely related to CVE-2025-21307 in the same component. | Reboot Required | Script | |
CRITICAL | KB5003209: Windows Server 2012 R2 Security Update (May 2021)Hyper-V vmswitch.sys — Guest-to-Host RCE via Crafted RNDIS over VMBusMicrosoft Windows Server 2012 R2 | CVE-2021-28476 | 9.9 | Public proof-of-concept exists (0vercl0k/CVE-2021-28476 on GitHub). Reported as affecting Azure infrastructure prior to patch. | Reboot Required | Script | |
CRITICAL | KB4512488: Windows Server 2012 R2 Security Update (August 2019)Windows DHCP Client — Memory Corruption RCE via Malicious DHCP ResponseMicrosoft Windows Server 2012 R2 | CVE-2019-0736 | 9.8 | Public technical analysis (McAfee, WithSecure, ZDI). No confirmed in-the-wild exploitation at time of writing. | Reboot Required | Script | |
CRITICAL | KB4601384: Windows Server 2012 R2 Security Update (February 2021)Windows TCP/IP IPv4 Source-Routing — Unauthenticated RCE via Crafted IP FragmentsMicrosoft Windows Server 2012 R2 | CVE-2021-24074 | 9.8 | Microsoft assessed exploit development as complex. No public PoC or confirmed in-the-wild exploitation at time of writing. | Reboot Required | Script | |
CRITICAL | KB5000848: Windows Server 2012 R2 Security Update (March 2021)Windows DNS Server — Unauthenticated RCE (An out-of-bounds read leading to RCE) — Requires Dynamic UpdatesMicrosoft Windows Server 2012 R2 | CVE-2021-26877 | 9.8 | No confirmed in-the-wild exploitation at time of writing. Part of a series of seven DNS Server RCEs patched together in March 2021 — McAfee published a research summary ("Seven Windows Wonders"). | Reboot Required | Script | |
CRITICAL | KB5000848: Windows Server 2012 R2 Security Update (March 2021)Windows DNS Server — Unauthenticated RCE (A memory corruption in DNS query parsing) — Requires Dynamic UpdatesMicrosoft Windows Server 2012 R2 | CVE-2021-26893 | 9.8 | No confirmed in-the-wild exploitation at time of writing. Part of a series of seven DNS Server RCEs patched together in March 2021 — McAfee published a research summary ("Seven Windows Wonders"). | Reboot Required | Script | |
CRITICAL | KB5000848: Windows Server 2012 R2 Security Update (March 2021)Windows DNS Server — Unauthenticated RCE (A memory corruption in DNS record handling) — Requires Dynamic UpdatesMicrosoft Windows Server 2012 R2 | CVE-2021-26895 | 9.8 | No confirmed in-the-wild exploitation at time of writing. Part of a series of seven DNS Server RCEs patched together in March 2021 — McAfee published a research summary ("Seven Windows Wonders"). | Reboot Required | Script | |
CRITICAL | KB5000848: Windows Server 2012 R2 Security Update (March 2021)Windows DNS Server — Unauthenticated RCE (An out-of-bounds write triggered by oversized SIG records on dynamic updates) — Requires Dynamic UpdatesMicrosoft Windows Server 2012 R2 | CVE-2021-26897 | 9.8 | No confirmed in-the-wild exploitation at time of writing. Part of a series of seven DNS Server RCEs patched together in March 2021 — McAfee published a research summary ("Seven Windows Wonders"). | Reboot Required | Script | |
CRITICAL | KB5005076: Windows Server 2012 R2 Security Update (August 2021)Windows Services for NFS ONCRPC XDR Driver — Unauthenticated RCEMicrosoft Windows Server 2012 R2 | CVE-2021-26432 | 9.8 | No confirmed in-the-wild exploitation at time of writing. Public technical analysis from FortiGuard and ExtraHop. | Reboot Required | Script | |
CRITICAL | KB5009624: Windows Server 2012 R2 Security Update (January 2022)Windows Hyper-V — Guest-VM Adjacent-Network Elevation of PrivilegeMicrosoft Windows Server 2012 R2 | CVE-2022-21901 | 9.0 | No confirmed in-the-wild exploitation at time of writing. | Reboot Required | Script | |
CRITICAL | KB5012670: Windows Server 2012 R2 Security Update (April 2022)Windows Network File System (NFS) — Unauthenticated RCE (An NFS protocol parsing flaw)Microsoft Windows Server 2012 R2 | CVE-2022-24491 | 9.8 | Public PoC and analysis available (ZDI, Trend Micro, fortra). No confirmed in-the-wild exploitation at time of writing for CVE-2022-24491 specifically. | Reboot Required | Script | |
CRITICAL | KB5026415: Windows Server 2012 R2 Security Update (May 2023)Windows Pragmatic General Multicast (PGM) — Unauthenticated RCE (A heap-based buffer overflow)Microsoft Windows Server 2012 R2 | CVE-2023-24943 | 9.8 | No confirmed in-the-wild exploitation at time of writing. Part of a series of PGM RCEs (CVE-2023-24943, -28250, -29363, -32014, -32015, -36397) — exploit research transferable across the set. | Reboot Required | Script | |
CRITICAL | KB5023765: Windows Server 2012 R2 Security Update (March 2023)Windows ICMP Protocol Stack — Heap-Based Buffer Overflow Unauthenticated Kernel RCEMicrosoft Windows Server 2012 R2 | CVE-2023-23415 | 9.8 | No confirmed in-the-wild exploitation at time of writing. Public technical analysis available; classification of "low complexity" makes exploit development tractable. | Reboot Required | Script | |
CRITICAL | KB5028228: Windows Server 2012 R2 Security Update (July 2023)Windows Routing and Remote Access Service (RRAS) — Unauthenticated Network RCE (#1 of 3 in July 2023)Microsoft Windows Server 2012 R2 | CVE-2023-35365 | 9.8 | No confirmed in-the-wild exploitation at time of writing. RRAS servers are typically internet-exposed by design (VPN endpoints, DirectAccess), making them high-value targets even without a public PoC. | Reboot Required | Script | |
CRITICAL | KB5028228: Windows Server 2012 R2 Security Update (July 2023)Windows Routing and Remote Access Service (RRAS) — Unauthenticated Network RCE (#2 of 3 in July 2023)Microsoft Windows Server 2012 R2 | CVE-2023-35366 | 9.8 | No confirmed in-the-wild exploitation at time of writing. RRAS servers are typically internet-exposed by design (VPN endpoints, DirectAccess), making them high-value targets even without a public PoC. | Reboot Required | Script | |
CRITICAL | KB5029312: Windows Server 2012 R2 Security Update (August 2023)Microsoft Message Queuing (MSMQ) — Unauthenticated RCE (Companion to CVE-2023-36910)Microsoft Windows Server 2012 R2 | CVE-2023-36911 | 9.8 | No confirmed in-the-wild exploitation at time of writing. Patched together with CVE-2023-36910 in August 2023. | Reboot Required | Script | |
CRITICAL | KB5034279: Windows Server 2012 R2 Security Update (January 2024).NET / Visual Studio X.509 Chain-Building Bug — Authentication Bypass via Malformed SignatureMicrosoft Windows Server 2012 R2 | CVE-2024-0057 | 9.1 | No confirmed in-the-wild exploitation at time of writing. Public Microsoft advisory. | Reboot Required | Script | |
CRITICAL | KB5022899: Windows Server 2012 R2 Security Update (February 2023)Microsoft PEAP (Protected Extensible Authentication Protocol) — Heap-Based Buffer Overflow RCEMicrosoft Windows Server 2012 R2 | CVE-2023-21689 | 9.8 | No confirmed in-the-wild exploitation at time of writing. One of three companion PEAP RCEs (CVE-2023-21689, -21690, -21692) patched together in February 2023. | Reboot Required | Script | |
CRITICAL | KB5025285: Windows Server 2012 R2 Security Update (April 2023)Microsoft Message Queuing (MSMQ) "QueueJumper" — Unauthenticated RCEMicrosoft Windows Server 2012 R2 | CVE-2023-21554 | 9.8 | Public technical analysis and proof-of-concept widely available since April 2023 (Check Point Research, IBM X-Force, Bitdefender). Over 360,000 internet-exposed MSMQ services were estimated at risk at disclosure. | Reboot Required | Script | |
CRITICAL | KB4487000: Windows Server 2012 R2 Security Update (February 2019)Windows DHCP Server — Unauthenticated Network RCE (A memory corruption in how the DHCP server processes crafted packets)Microsoft Windows Server 2012 R2 | CVE-2019-0626 | 9.8 | No confirmed in-the-wild exploitation at time of writing. | Reboot Required | Script | |
CRITICAL | KB4586845: Windows Server 2012 R2 Security Update (November 2020)Windows Network File System (NFSv3) — Wormable Kernel Heap Overflow RCEMicrosoft Windows Server 2012 R2 | CVE-2020-17051 | 9.8 | Public technical analysis from McAfee Labs and Virsec. The first publicly-known RCE in the Windows NFSv3 implementation. | Reboot Required | Script | |
CRITICAL | KB5000848: Windows Server 2012 R2 Security Update (March 2021)Windows DNS Server — Unauthenticated RCE (A heap-based buffer overflow) — Requires Dynamic UpdatesMicrosoft Windows Server 2012 R2 | CVE-2021-26894 | 9.8 | No confirmed in-the-wild exploitation at time of writing. Part of a series of seven DNS Server RCEs patched together in March 2021 — McAfee published a research summary ("Seven Windows Wonders"). | Reboot Required | Script | |
CRITICAL | KB5068905: Windows Server 2012 R2 Security Update (November 2025)Windows GDI+ (gdiplus.dll) Heap-Based Buffer Overflow — Unauthenticated RCE via Crafted MetafileMicrosoft Windows Server 2012 R2 | CVE-2025-60724 | 9.8 | Not in the CISA KEV catalogue at time of writing. No confirmed in-the-wild exploitation, but the attack surface (Print Spooler accepting metafiles over RPC) is unauthenticated and the flaw is rated CVSS 9.8. | Reboot Required | Script | |
CRITICAL | KB5025285: Windows Server 2012 R2 Security Update (April 2023)Windows Pragmatic General Multicast (PGM) — Unauthenticated RCE (An integer-underflow input-validation flaw)Microsoft Windows Server 2012 R2 | CVE-2023-28250 | 9.8 | No confirmed in-the-wild exploitation at time of writing. Part of a series of PGM RCEs (CVE-2023-24943, -28250, -29363, -32014, -32015, -36397) — exploit research transferable across the set. | Reboot Required | Script | |
CRITICAL | KB5026415: Windows Server 2012 R2 Security Update (May 2023)Windows Network File System (NFS) — Unauthenticated RCE in NFSv4.1 utf8string ParsingMicrosoft Windows Server 2012 R2 | CVE-2023-24941 | 9.8 | Public technical analysis by Trend Micro and ZDI. No confirmed in-the-wild exploitation at time of writing. | Reboot Required | Script | |
CRITICAL | KB5027271: Windows Server 2012 R2 Security Update (June 2023)Windows Pragmatic General Multicast (PGM) — Unauthenticated RCE (A heap-based buffer overflow)Microsoft Windows Server 2012 R2 | CVE-2023-29363 | 9.8 | No confirmed in-the-wild exploitation at time of writing. Part of a series of PGM RCEs (CVE-2023-24943, -28250, -29363, -32014, -32015, -36397) — exploit research transferable across the set. | Reboot Required | Script | |
CRITICAL | KB5027271: Windows Server 2012 R2 Security Update (June 2023)Windows Pragmatic General Multicast (PGM) — Unauthenticated RCE (An integer-underflow input-validation flaw)Microsoft Windows Server 2012 R2 | CVE-2023-32014 | 9.8 | No confirmed in-the-wild exploitation at time of writing. Part of a series of PGM RCEs (CVE-2023-24943, -28250, -29363, -32014, -32015, -36397) — exploit research transferable across the set. | Reboot Required | Script | |
CRITICAL | KB5027271: Windows Server 2012 R2 Security Update (June 2023)Windows Pragmatic General Multicast (PGM) — Unauthenticated RCE (An input-validation flaw)Microsoft Windows Server 2012 R2 | CVE-2023-32015 | 9.8 | No confirmed in-the-wild exploitation at time of writing. Part of a series of PGM RCEs (CVE-2023-24943, -28250, -29363, -32014, -32015, -36397) — exploit research transferable across the set. | Reboot Required | Script | |
CRITICAL | KB5028228: Windows Server 2012 R2 Security Update (July 2023)Windows Routing and Remote Access Service (RRAS) — Unauthenticated Network RCE (#3 of 3 in July 2023)Microsoft Windows Server 2012 R2 | CVE-2023-35367 | 9.8 | No confirmed in-the-wild exploitation at time of writing. RRAS servers are typically internet-exposed by design (VPN endpoints, DirectAccess), making them high-value targets even without a public PoC. | Reboot Required | Script | |
CRITICAL | KB5029312: Windows Server 2012 R2 Security Update (August 2023)Microsoft Message Queuing (MSMQ) — Integer-Overflow RCEMicrosoft Windows Server 2012 R2 | CVE-2023-36910 | 9.8 | Public Automox worklet for mitigation. No confirmed in-the-wild exploitation at time of writing. | Reboot Required | Script | |
CRITICAL | KB5029312: Windows Server 2012 R2 Security Update (August 2023)Microsoft Message Queuing (MSMQ) — Unauthenticated Network RCEMicrosoft Windows Server 2012 R2 | CVE-2023-35385 | 9.8 | No confirmed in-the-wild exploitation at time of writing. MSMQ has been the focus of a sustained vulnerability-research effort following QueueJumper (CVE-2023-21554) — multiple companion RCEs have been disclosed in the same family. | Reboot Required | Script | |
CRITICAL | KB5031419: Windows Server 2012 R2 Security Update (October 2023)Microsoft Message Queuing (MSMQ) — Unauthenticated Network RCEMicrosoft Windows Server 2012 R2 | CVE-2023-35349 | 9.8 | No confirmed in-the-wild exploitation at time of writing. MSMQ has been the focus of a sustained vulnerability-research effort following QueueJumper (CVE-2023-21554) — multiple companion RCEs have been disclosed in the same family. | Reboot Required | Script | |
CRITICAL | KB5031419: Windows Server 2012 R2 Security Update (October 2023)Windows IIS Server — Unauthenticated Authentication-Bypass Elevation of PrivilegeMicrosoft Windows Server 2012 R2 | CVE-2023-36434 | 9.8 | No confirmed in-the-wild exploitation at time of writing. Highlighted by Arctic Wolf as one of the two critical CVEs in the October 2023 Patch Tuesday. | Reboot Required | Script | |
CRITICAL | KB5032249: Windows Server 2012 R2 Security Update (November 2023)Windows Pragmatic General Multicast (PGM) — Unauthenticated RCE (A buffer over-read)Microsoft Windows Server 2012 R2 | CVE-2023-36397 | 9.8 | No confirmed in-the-wild exploitation at time of writing. Part of a series of PGM RCEs (CVE-2023-24943, -28250, -29363, -32014, -32015, -36397) — exploit research transferable across the set. | Reboot Required | Script | |
CRITICAL | KB5040456: Windows Server 2012 R2 Security Update (July 2024)Remote Desktop Licensing Service — Unauthenticated Integer-Underflow RCEMicrosoft Windows Server 2012 R2 | CVE-2024-38074 | 9.8 | Public technical analysis available ("MadLicense" research series). No confirmed in-the-wild exploitation at time of writing. | Reboot Required | Script | |
CRITICAL | KB5041828: Windows Server 2012 R2 Security Update (August 2024)Windows Line Printer Daemon (LPD) Service — Use-After-Free RCEMicrosoft Windows Server 2012 R2 | CVE-2024-38199 | 9.8 | Microsoft assessed exploitation as "more likely". Public proof-of-concept research has been published. | Reboot Required | Script | |
CRITICAL | KB5044343: Windows Server 2012 R2 Security Update (October 2024)Windows Netlogon — Adjacent-Network Elevation of Privilege via DC Name ImpersonationMicrosoft Windows Server 2012 R2 | CVE-2024-38124 | 9.0 | No confirmed in-the-wild exploitation at time of writing. | Reboot Required | Script | |
CRITICAL | KB5046682: Windows Server 2012 R2 Security Update (November 2024)Windows Kerberos KDC Proxy (KPSSVC) — Unauthenticated RCE via Integer OverflowMicrosoft Windows Server 2012 R2 | CVE-2024-43639 | 9.8 | No confirmed in-the-wild exploitation at time of writing. ZDI published a technical analysis in March 2025. | Reboot Required | Script | |
CRITICAL | KB5050048: Windows Server 2012 R2 Security Update (January 2025)Windows Reliable Multicast Transport Driver (RMCAST) Use-After-Free — Unauthenticated Network RCEMicrosoft Windows Server 2012 R2 | CVE-2025-21307 | 9.8 | Microsoft assessed exploitation as "more likely". No public proof-of-concept at time of writing. | Reboot Required | Script | |
CRITICAL | KB5087471: Windows Server 2012 R2 Security Update (May 2026)Windows Netlogon Stack-Based Buffer Overflow — Unauthenticated RCE on Domain ControllersMicrosoft Windows Server 2012 R2 | CVE-2026-41089 | 9.8 | No confirmed in-the-wild exploitation at time of writing. Patch every domain controller before any other system. | Reboot Required | Script | |
CRITICAL | KB5005076: Windows Server 2012 R2 Security Update (August 2021)Windows TCP/IP Stack — Unauthenticated Network RCEMicrosoft Windows Server 2012 R2 | CVE-2021-26424 | 9.9 | No confirmed in-the-wild exploitation at time of writing. Microsoft assessed this in the August 2021 Patch Tuesday cycle. | Reboot Required | Script | |
CRITICAL | KB5023765: Windows Server 2012 R2 Security Update (March 2023)Microsoft RPC Runtime — Integer-Underflow Unauthenticated RCEMicrosoft Windows Server 2012 R2 | CVE-2023-21708 | 9.8 | No confirmed in-the-wild exploitation at time of writing. RPC RCEs in this class historically draw rapid exploit development. | Reboot Required | Script | |
CRITICAL | KB5022899: Windows Server 2012 R2 Security Update (February 2023)Microsoft PEAP (Protected Extensible Authentication Protocol) — Heap-Based Buffer Overflow RCEMicrosoft Windows Server 2012 R2 | CVE-2023-21692 | 9.8 | No confirmed in-the-wild exploitation at time of writing. Companion CVE to CVE-2023-21689 and CVE-2023-21690 in the same patch cycle. | Reboot Required | Script | |
CRITICAL | KB5028228: Windows Server 2012 R2 Security Update (July 2023)Microsoft Message Queuing (MSMQ) — Unauthenticated Network RCEMicrosoft Windows Server 2012 R2 | CVE-2023-32057 | 9.8 | No confirmed in-the-wild exploitation at time of writing. MSMQ has been the focus of a sustained vulnerability-research effort following QueueJumper (CVE-2023-21554) — multiple companion RCEs have been disclosed in the same family. | Reboot Required | Script | |
CRITICAL | KB4038792: Windows Server 2012 R2 Security Update (September 2017)Windows DHCP Server — Unauthenticated Network RCE (A boundary error in DHCP failover packet processing)Microsoft Windows Server 2012 R2 | CVE-2017-8686 | 9.8 | No confirmed in-the-wild exploitation at time of writing. | Reboot Required | Script | |
CRITICAL | KB4534297: Windows Server 2012 R2 Security Update (January 2020)Windows Remote Desktop Gateway ("BlueGate") — Pre-Auth UDP RCE on Port 3391Microsoft Windows Server 2012 R2 | CVE-2020-0609 | 9.8 | Public proof-of-concept code (DoS + RCE) from multiple researchers; working RCE PoC has been demonstrated. ~15,500 RD Gateway servers were internet-exposed on UDP 3391 at disclosure. | Reboot Required | Script | |
CRITICAL | KB5008263: Windows Server 2012 R2 Security Update (December 2021)Microsoft iSNS Server — Unauthenticated Memory-Corruption RCEMicrosoft Windows Server 2012 R2 | CVE-2021-43215 | 9.8 | No confirmed in-the-wild exploitation at time of writing. | Reboot Required | Script | |
CRITICAL | KB5063950: Windows Server 2012 R2 Security Update (August 2025)Windows GDI+ Heap-Based Buffer Overflow — Unauthenticated RCE via Crafted MetafileMicrosoft Windows Server 2012 R2 | CVE-2025-53766 | 9.8 | No confirmed in-the-wild exploitation at time of writing. Public technical analysis from Check Point research is available. | Reboot Required | Script | |
CRITICAL | KB5062597: Windows Server 2012 R2 Security Update (July 2025)SPNEGO NEGOEX Heap-Based Buffer Overflow — Wormable Unauthenticated RCE in LSASSMicrosoft Windows Server 2012 R2 | CVE-2025-47981 | 9.8 | Microsoft assessed exploitation as "more likely" and described the flaw as wormable. Prioritise internet-facing systems and domain controllers. | Reboot Required | Script | |
CRITICAL | KB5022899: Windows Server 2012 R2 Security Update (February 2023)Microsoft PEAP (Protected Extensible Authentication Protocol) — Unauthenticated RCEMicrosoft Windows Server 2012 R2 | CVE-2023-21690 | 9.8 | No confirmed in-the-wild exploitation at time of writing. Companion CVE to CVE-2023-21689 and CVE-2023-21692 in the same patch cycle. | Reboot Required | Script | |
CRITICAL | KB4471320: Windows Server 2012 R2 Security Update (December 2018)Windows DNS Server — Unauthenticated RCE (A heap-based buffer overflow in DNS request handling) — Requires Dynamic UpdatesMicrosoft Windows Server 2012 R2 | CVE-2018-8626 | 9.8 | No confirmed in-the-wild exploitation at time of writing. Part of a series of seven DNS Server RCEs patched together in March 2021 — McAfee published a research summary ("Seven Windows Wonders"). | Reboot Required | Script | |
CRITICAL | KB4512488: Windows Server 2012 R2 Security Update (August 2019)Windows Remote Desktop Services (RDP) — Wormable Pre-Auth RCE ("DejaBlue")Microsoft Windows Server 2012 R2 | CVE-2019-1182 | 9.8 | No confirmed in-the-wild worm at time of writing, but the same protocol layer was the target of BlueKeep (CVE-2019-0708). PoC research has been published. | Reboot Required | Script | |
CRITICAL | KB5017367: Windows Server 2012 R2 Security Update (September 2022)Windows IKE Protocol Extensions — Unauthenticated RCE (A flaw in how IKE / IPsec processes crafted IP packets when IKE and AuthIP IPsec Keying Modules are active)Microsoft Windows Server 2012 R2 | CVE-2022-34721 | 9.8 | Public proof-of-concept research available (micropatches and PoCs published). In-the-wild exploitation has been reported. | Reboot Required | Script | |
HIGHCISA KEV | KB5058403: Windows Server 2012 R2 Security Update (May 2025)Windows Ancillary Function Driver for WinSock (afd.sys) Use-After-Free — Actively Exploited Privilege EscalationMicrosoft Windows Server 2012 R2 | CVE-2025-32709 | 7.8 | Added to the CISA Known Exploited Vulnerabilities catalogue in May 2025. Microsoft confirmed limited, targeted in-the-wild exploitation across healthcare and government sectors since April 2025. Patch on an emergency timeline. | Reboot Required | Script | |
HIGHCISA KEV | KB5058403: Windows Server 2012 R2 Security Update (May 2025)Windows Common Log File System (CLFS) Driver Heap Overflow — Actively Exploited Privilege EscalationMicrosoft Windows Server 2012 R2 | CVE-2025-32706 | 7.8 | Added to the CISA Known Exploited Vulnerabilities catalogue in May 2025. Confirmed exploited in the wild as a zero-day, primarily in ransomware and espionage privilege-escalation chains. Patch on an emergency timeline. | Reboot Required | Script |