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PatchSiren cyber security CVE debrief

CVE-2026-85829 Microsoft CVE debrief

A double free vulnerability in the Windows Wired AutoConfig Service allows an authorized attacker to elevate privileges locally. This vulnerability affects multiple versions of Windows 10, Windows 11, and Windows Server. System administrators and security teams should assess exposure and apply patches to prevent local privilege escalation attacks. The vulnerability has a high severity score and requires immediate attention. The CVE Program and NVD provide official records of the vulnerability.

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-13
Original CVE updated
2026-10-13
Advisory published
2026-10-13
Advisory updated
2026-10-13

Who should care

System administrators and security teams responsible for Windows systems should assess exposure and apply patches to prevent local privilege escalation attacks.

Why it matters

CVE-2026-85829 is a high-severity vulnerability in Windows Wired AutoConfig Service that allows local privilege escalation. System administrators and security teams should assess exposure and apply patches immediately to prevent attacks.

  • Local privilege escalation is possible for authorized attackers
  • System compromise may occur if not patched
  • Verify and apply updates for affected Windows versions

Technical summary

The Windows Wired AutoConfig Service has a double free vulnerability that allows an authorized attacker to elevate privileges locally. The vulnerability affects multiple Windows versions, including Windows 10, Windows 11, and Windows Server. The vulnerability has a high severity score and requires immediate attention. Microsoft has released a patch for the vulnerability.

Defensive priority

Apply patches immediately for Windows Wired AutoConfig Service to prevent local privilege escalation attacks.

Recommended defensive actions

  • Apply patches for Windows Wired AutoConfig Service
  • Verify and apply updates for affected Windows versions
  • Monitor system logs for suspicious activity

Evidence notes

The CVE Program and NVD provide official records of the vulnerability. Microsoft has released a patch for the vulnerability. The vulnerability affects multiple versions of Windows 10, Windows 11, and Windows Server. System administrators and security teams should assess exposure and apply patches to prevent local privilege escalation attacks. The vulnerability has a high severity score and requires immediate attention.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-85829 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-85829

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

  • CVE-2026-85829 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-85829

    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.