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PatchSiren cyber security CVE debrief

CVE-2026-62746 Microsoft CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-11T17:18:26.697Z and has not been modified since then. The NVD entry is currently Analyzed. CVE-2026-62746 is a buffer over-read vulnerability in the Windows Win32K.sys kernel module. An authorized attacker can exploit this vulnerability to disclose sensitive information locally. The vulnerability has been assigned a CVSS score of 5.5 (Medium severity). Multiple Windows versions are affected, including Windows 10, Windows 11, and various Windows Server releases. System administrators and security teams responsible for Windows infrastructure, particularly those managing Windows 10, Windows 11, and Windows Server environments, should prioritize patching and monitoring for this vulnerability. Microsoft has provided a patch and vendor advisory for mitigation. The CVE record indicates a buffer over-read vulnerability in Windows Win32K, allowing an authorized attacker to disclose information locally. Multiple Windows versions and server releases are listed as vulnerable, including Windows 10, Windows 11, and various Windows Server editions.

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
MEDIUM 5.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-11
Original CVE updated
2026-08-16
Advisory published
2026-08-11
Advisory updated
2026-08-16

Who should care

System administrators and security teams responsible for Windows infrastructure, particularly those managing Windows 10, Windows 11, and Windows Server environments, should prioritize patching and monitoring for this vulnerability.

Technical summary

CVE-2026-62746 is a buffer over-read vulnerability in the Windows Win32K.sys kernel module. An authorized attacker can exploit this vulnerability to disclose sensitive information locally. The vulnerability has been assigned a CVSS score of 5.5 (Medium severity). Multiple Windows versions are affected, including Windows 10, Windows 11, and various Windows Server releases.

Defensive priority

Medium-priority defensive actions are recommended due to the local information disclosure risk.

Recommended defensive actions

  • Apply the Microsoft patch for CVE-2026-62746
  • Review and implement compensating controls for vulnerable Windows versions
  • Monitor systems for potential exploitation attempts
  • Verify inventory of affected Windows releases and prioritize patching

Evidence notes

The CVE-2026-62746 record indicates a buffer over-read vulnerability in Windows Win32K, allowing an authorized attacker to disclose information locally. Multiple Windows versions and server releases are listed as vulnerable, including Windows 10, Windows 11, and various Windows Server editions. Microsoft has provided a patch and vendor advisory for mitigation.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-62746 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-62746

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

  • CVE-2026-62746 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-62746

    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.