PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-88096 Microsoft CVE debrief

A Windows DCOM Server Elevation of Privilege Vulnerability exists due to a race condition allowing an authorized attacker to elevate privileges locally. Multiple Windows versions and server releases are affected, including Windows 10, Windows 11, and Windows Server 2012 through 2025. This vulnerability is caused by a race condition in the Windows DCOM Server, which allows an authorized attacker to elevate privileges locally. The vulnerability affects multiple Windows versions, including Windows 10 (Versions 1607, 1809, 21H2, 22H2), Windows 11 (Versions 23H2, 24H2, 25H2, 26H1, 26H2), and various Windows Server releases (2012, 2012 R2, 2016, 2019, 2022, 2025). Defenders should be be

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
HIGH 7
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

Defenders responsible for Windows systems, especially those exposed to local attacks, should prioritize patching affected systems. This includes administrators of Windows 10, Windows 11, and Windows Server environments.

Why it matters

CVE-2026-88096 is a high-severity elevation of privilege vulnerability in Windows DCOM Server. Defenders must prioritize patching affected systems to prevent local attacks.

  • Local privilege escalation risk requires immediate patching
  • Verify and apply vendor patches to prevent exploitation
  • Monitor systems for suspicious local activity

Technical summary

The Windows DCOM Server Elevation of Privilege Vulnerability (CVE-2026-88096) is caused by a race condition in the Windows DCOM Server. This allows an authorized attacker to elevate privileges locally. The vulnerability affects multiple Windows versions, including Windows 10 (Versions 1607, 1809, 21H2, 22H2), Windows 11 (Versions 23H2, 24H2, 25H2, 26H1, 26H2), and various Windows Server releases (2012, 2012 R2, 2016, 2019, 2022, 2025).

Defensive priority

Defenders should prioritize patching affected Windows systems, especially those exposed to local attacks. Verify and apply vendor patches immediately.

Recommended defensive actions

  • Apply patches from Microsoft for affected Windows versions
  • Verify system exposure and apply compensating controls if patching is delayed
  • Monitor systems for suspicious local activity

Evidence notes

The CVE Program and NVD provide official records of the vulnerability. Microsoft offers a patch for affected systems. The vulnerability affects multiple Windows versions and server releases, including Windows 10, Windows 11, and Windows Server 2012 through 2025. The CVE record was published on 2026-10-13T19:00:11.489Z and has not been modified since then. Official CVE Program record with source-provided CVE metadata and Official NIST NVD detail page and source-specific vulnerability

Sources and references

Verified primary and authoritative sources

  • CVE-2026-88096 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-88096

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

  • CVE-2026-88096 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-88096

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

Supplemental references

  • Windows DCOM Server Elevation of Privilege Vulnerability

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/88xxx/CVE-2026-88096.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88096

    Supplemental source - vendor-advisory, patch

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.