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PatchSiren cyber security CVE debrief

CVE-2026-62810 Microsoft CVE debrief

Microsoft has released a patch for an elevation of privilege vulnerability in Active Directory Certificate Services (AD CS). The vulnerability, CVE-2026-62810, is a heap-based buffer overflow that allows an authorized attacker to elevate privileges locally. AD CS administrators and security teams should assess exposure, apply patches, and monitor systems for suspicious activity. The CVE record and Microsoft's advisory confirm the vulnerability in AD CS. Affected versions require verification.

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-08
Original CVE updated
2026-10-08
Advisory published
2026-09-08
Advisory updated
2026-10-08

Who should care

AD CS administrators and security teams should assess exposure and apply patches. The vulnerability, CVE-2026-62810, is a heap-based buffer overflow that allows an authorized attacker to elevate privileges locally. AD CS administrators and security teams should assess exposure, apply patches, and monitor systems for suspicious activity. Verify patch deployment for AD CS servers, assess system configurations for AD CS

Why it matters

CVE-2026-62810 is an elevation of privilege vulnerability in Active Directory Certificate Services (AD CS). A heap-based buffer overflow allows authorized attackers to elevate privileges locally. AD CS administrators and security teams should assess exposure, apply patches, and monitor systems for suspicious activity.

  • Verify patch deployment for AD CS servers
  • Assess system configurations for potential vulnerabilities
  • Monitor AD CS for suspicious activity

Technical summary

A heap-based buffer overflow in Active Directory Certificate Services (AD CS) allows an authorized attacker to elevate privileges locally. The vulnerability, CVE-2026-62810, is confirmed by the CVE record and Microsoft's advisory. Affected versions require verification. AD CS administrators and security teams should assess exposure, apply patches, and monitor systems for suspicious activity.

Defensive priority

Apply patches immediately for AD CS servers and verify system configurations.

Recommended defensive actions

  • Apply patches for affected AD CS versions
  • Verify system configurations for AD CS
  • Monitor AD CS for suspicious activity

Evidence notes

The CVE record and Microsoft's advisory confirm the vulnerability in AD CS. Affected versions require verification. The vulnerability is a heap-based buffer overflow that allows an authorized attacker to elevate privileges locally. AD CS administrators and security teams should assess exposure and apply patches. The patch deployment for AD CS servers should be verified, and system configurations should be assessed for potential vulnerabilities.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-62810 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-62810

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

  • CVE-2026-62810 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-62810

    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.