IRONSMITHINTEL
CRITICALCVSS9.8
|
Actively Exploited
|CISA KEV|CVE-2024-4358|Auth: none — unauthenticated|Reboot: required|Manual only

Progress Telerik Report Server Authentication Bypass by Spoofing Vulnerability

Progress Telerik Report Server contains an authorization bypass by spoofing vulnerability that allows an attacker to obtain unauthorized access.

Published May 29, 2024 · Updated May 16, 2026
Why patchRisk explained in plain English
Worst-case scenarioIf unpatched

A remote attacker, without authentication, can achieve full data confidentiality loss, arbitrary modification of data, complete denial of service or system unavailability. Federal agencies are required to remediate by 2024-07-04 under CISA BOD 22-01.

How the attack worksNo clicks needed

This is a Software Vulnerability (CWE-290) (CWE-290) vulnerability in Progress Telerik Report Server. In Progress Telerik Report Server, version 2024 Q1 (10.0.24.305) or earlier, on IIS, an unauthenticated attacker can gain access to Telerik Report Server restricted functionality via an authentication bypass vulnerability. Exploitation requires remote network access, low attack complexity, no authentication required, and no user interaction required.

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Phishing link

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Malicious file

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Server compromised

Am I affected?Quick check

Probably yes if any of these apply:

IT Security
Running report server 2024: v ≤ 10.0.24.305
Real-world incidentsWhat we've seen

CISA added this CVE to the Known Exploited Vulnerabilities catalog on 2024-06-13 based on evidence of active exploitation in the wild. Federal agencies required to remediate by 2024-07-04.

How to patch

Manual remediation steps

Apply the Vendor Patch

This vulnerability is in the CISA Known Exploited Vulnerabilities catalog — apply the vendor's security update as soon as possible.

CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

References

    1
    Vendor advisory: https://docs.telerik.com/report-server/knowledge-base/registration-auth-bypass-cve-2024-4358
    1
    NVD entry: https://nvd.nist.gov/vuln/detail/CVE-2024-4358
    1
    CISA KEV: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-4358
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