IRONSMITHINTEL
HIGHCVSS7.8
|
Actively Exploited
|CISA KEV|CVE-2022-41033|Auth: low — authenticated user|Reboot: required|Manual only

KB5018410: Windows Server Security Update (October 2022)

Microsoft Windows COM+ Event System Service contains an unspecified vulnerability that allows for privilege escalation.

Published Oct 11, 2022 · Updated May 16, 2026
Why patchRisk explained in plain English
Worst-case scenarioIf unpatched

A local attacker, with a low-privilege account, can achieve full data confidentiality loss, arbitrary modification of data, complete denial of service or system unavailability. Federal agencies are required to remediate by 2022-11-01 under CISA BOD 22-01.

How the attack worksNo clicks needed

This is a Type Confusion (CWE-843) vulnerability in Microsoft Windows COM+ Event System Service. Windows COM+ Event System Service Elevation of Privilege Vulnerability Exploitation requires local access, low attack complexity, a low-privilege authenticated account, and no user interaction required.

Am I affected?Quick check

Probably yes if any of these apply:

●Windows Administrators
●Systems Engineers
●IT Security
●Running windows 10 1507: v < 10.0.10240.19507; windows 10 1607: v < 10.0.14393.5427; windows 10 1809: v < 10.0.17763.3532; windows 10 20h2: v < 10.0.19042.2130; windows 10 21h1: v < 10.0.19043.2130; windows 10 21h2: v < 10.0.19044.2130; windows 11 21h2: v < 10.0.22000.1098; windows 11 22h2: v < 10.0.22621.674; windows 7: -; windows 8.1: -; windows rt 8.1: -; windows server 2008: -, r2; windows server 2012: -, r2; windows server 2016: v < 10.0.14393.5427; windows server 2019: v < 10.0.17763.3532; windows server 2022: v < 10.0.20348.1129
Fixed inKB5018410, KB5018411, KB5018418, KB5018419, KB5018421, KB5018425, KB5018427, KB5018446, KB5018450, KB5018454, KB5018457, KB5018474, KB5018476, KB5018478, KB5018479 (applies to 40 product versions) — build 10.0.10240.19507, 10.0.14393.5427+
Real-world incidentsWhat we've seen

CISA added this CVE to the Known Exploited Vulnerabilities catalog on 2022-10-11 based on evidence of active exploitation in the wild. Federal agencies required to remediate by 2022-11-01.

How to patch

Manual download

For air-gapped servers or out-of-band deployment. Microsoft Update Catalog returns every OS-version variant of this update.

↗ Microsoft Update CatalogKB5018410

Manual remediation steps

Apply the Microsoft Security Update

Microsoft has released an official security update that fixes this vulnerability.

Required KB Updates

    1
    KB5018410 — https://support.microsoft.com/help/5018410
    1
    KB5018411 — https://support.microsoft.com/help/5018411
    1
    KB5018418 — https://support.microsoft.com/help/5018418
    1
    KB5018419 — https://support.microsoft.com/help/5018419
    1
    KB5018421 — https://support.microsoft.com/help/5018421
    1
    KB5018425 — https://support.microsoft.com/help/5018425
    1
    KB5018427 — https://support.microsoft.com/help/5018427
    1
    KB5018446 — https://support.microsoft.com/help/5018446
    1
    KB5018450 — https://support.microsoft.com/help/5018450
    1
    KB5018454 — https://support.microsoft.com/help/5018454
    1
    KB5018457 — https://support.microsoft.com/help/5018457
    1
    KB5018474 — https://support.microsoft.com/help/5018474
    1
    KB5018476 — https://support.microsoft.com/help/5018476
    1
    KB5018478 — https://support.microsoft.com/help/5018478
    1
    KB5018479 — https://support.microsoft.com/help/5018479

Supersedes: KB5017305, KB5017308, KB5017315, KB5017316, KB5017321, KB5017327, KB5017358, KB5017361, KB5017367, KB5017370

Affected Products

    1
    Windows 10 Version 1607 for 32-bit Systems
    1
    Windows 10 Version 1607 for x64-based Systems
    1
    Windows 10 Version 1809 for 32-bit Systems
    1
    Windows 10 Version 1809 for ARM64-based Systems
    1
    Windows 10 Version 1809 for x64-based Systems
    1
    Windows 10 Version 20H2 for 32-bit Systems
    1
    Windows 10 Version 20H2 for ARM64-based Systems
    1
    Windows 10 Version 21H1 for 32-bit Systems
    1
    Windows 10 Version 21H1 for ARM64-based Systems
    1
    Windows 10 Version 21H1 for x64-based Systems
    1
    Windows 10 Version 21H2 for 32-bit Systems
    1
    Windows 10 Version 21H2 for ARM64-based Systems
    1
    Windows 10 Version 21H2 for x64-based Systems
    1
    Windows 10 for 32-bit Systems
    1
    Windows 10 for x64-based Systems
    1
    Windows 11 Version 22H2 for ARM64-based Systems
    1
    Windows 11 Version 22H2 for x64-based Systems
    1
    Windows 11 version 21H2 for ARM64-based Systems
    1
    Windows 11 version 21H2 for x64-based Systems
    1
    Windows 7 for 32-bit Systems Service Pack 1
    1
    (…20 more product versions)

Fixed Build Numbers

    1
    10.0.10240.19507
    1
    10.0.14393.5427
    1
    10.0.17763.3532
    1
    10.0.19042.2130
    1
    10.0.19043.2130
    1
    10.0.19044.2130
    1
    10.0.20348.1129
    1
    10.0.22000.1098
    1
    10.0.22621.674
    1
    6.0.6003.21721
    1
    (…3 more builds)

Installation Methods

Windows Update (recommended)

1
Settings → Windows Update → Check for updates
2
The security update is offered if your system is in scope
3
Restart when prompted — a reboot IS required to complete the install

Microsoft Update Catalog (manual download)

1
Open https://catalog.update.microsoft.com
2
Search for KB5018410
3
Download the package matching your OS architecture and Windows build
4
Run the .msu installer with administrator privileges
5
Restart when prompted

WSUS / SCCM / Intune

Approve KB5018410 for the affected products in your update management console.

Microsoft Download Center Links

    1
    https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5018410
    1
    https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5018411
    1
    https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5018418
    1
    https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5018419
    1
    https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5018421
    1
    (…10 more)

Verification

Confirm the update is installed:

Get-HotFix | Where-Object { $_.HotFixID -in @('KB5018410','KB5018411','KB5018418','KB5018419','KB5018421','KB5018425','KB5018427','KB5018446','KB5018450','KB5018454','KB5018457','KB5018474','KB5018476','KB5018478','KB5018479') }

References

    1
    Microsoft Security Response Center: https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2022-41033
    1
    KB article: https://support.microsoft.com/help/5018410
    1
    KB article: https://support.microsoft.com/help/5018418
    1
    KB article: https://support.microsoft.com/help/5018419
    1
    NVD entry: https://nvd.nist.gov/vuln/detail/CVE-2022-41033
    1
    CISA KEV: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-41033

Discovery Credit

Anonymous

PowerShell automationComing soon

No tested PowerShell script for this entry yet. We’re prioritising automation based on user demand.

References

↗ CVE-2022-41033↗ MSRC Advisory↗ NVD↗ KBKB5018410