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PatchSiren cyber security CVE debrief

CVE-2026-96921 Microsoft CVE debrief

A Windows Message Queuing Queue Manager Information Disclosure Vulnerability exists, allowing an authorized attacker to disclose information locally due to a type confusion issue. This vulnerability impacts Windows Message Queuing Queue Manager configurations, requiring defenders to verify and apply patches, review configurations, and monitor for unauthorized access. The CVE Program and NVD provide official records of the vulnerability, and Microsoft has released a patch for the vulnerability.

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
MEDIUM 5.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-13
Original CVE updated
2026-10-14
Advisory published
2026-10-13
Advisory updated
2026-10-14

Who should care

Windows administrators, defenders, and teams responsible for Windows Message Queuing Queue Manager configurations and security should prioritize verifying and applying patches, reviewing configurations, and monitoring for unauthorized access to sensitive information. This includes reviewing access controls for Windows Message Queuing Queue Manager and ensuring proper security measures are in place.

Why it matters

CVE-2026-96921 is a medium-severity vulnerability in Windows Message Queuing Queue Manager that allows local information disclosure. Defenders should verify and apply patches, review configurations, and monitor for unauthorized access.

  • Verify patch application to prevent information disclosure
  • Review access controls for Windows Message Queuing Queue Manager
  • Monitor for unauthorized access to sensitive information

Technical summary

The Windows Message Queuing Queue Manager is vulnerable to an information disclosure issue due to a type confusion error. An authorized attacker can exploit this vulnerability to disclose information locally. The vulnerability impacts Windows Message Queuing Queue Manager configurations, requiring defenders to verify and apply patches, review configurations, and monitor for unauthorized access.

Defensive priority

Medium priority for Windows Message Queuing Queue Manager administrators and defenders to verify and apply patches.

Recommended defensive actions

  • Verify and apply the Microsoft patch for CVE-2026-96921
  • Review Windows Message Queuing Queue Manager configurations for proper access controls
  • Monitor for unauthorized access to sensitive information

Evidence notes

The CVE Program and NVD provide official records of the vulnerability. Microsoft has released a patch for the vulnerability. Defenders should verify patch application, review Windows Message Queuing Queue Manager configurations for proper access controls, and monitor for unauthorized access to sensitive information. The vulnerability allows local information disclosure via a type confusion error in Windows Message Queuing Queue Manager.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-96921 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-96921

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-96921 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-96921

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.