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CVE-2026-96315 Microsoft CVE debrief

A Windows Overlay Filter Tampering Vulnerability exists due to missing authorization, allowing an authorized attacker to perform tampering locally. Multiple Windows versions and server releases are affected, including Windows 10, Windows 11, and Windows Server. The vulnerability requires attention from Windows administrators and security teams to prevent local tampering by authorized attackers. Affected versions need to be patched, and monitoring for potential tampering attempts is advised. The CVE Program and NVD provide official records of the vulnerability. Microsoft offers a patch for the issue.

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
2026-10-13
Advisory published
2026-10-13
Advisory updated
2026-10-13

Who should care

Defenders should assess exposure for Windows administrators and security teams responsible for patch management. They should review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance. They should plan vendor-supported updates or mitigations through normal change control where exposure is confirmed. They should review compensating controls for exposed systems while

Why it matters

The Windows Overlay Filter Tampering Vulnerability requires attention from Windows administrators and security teams to prevent local tampering by authorized attackers. Affected versions need to be patched, and monitoring for potential tampering attempts is advised.

  • Verify patch deployment for affected Windows versions
  • Monitor for indicators of tampering attempts
  • Assess local attack surface for vulnerable systems

Technical summary

The vulnerability exists in the Windows Overlay Filter due to missing authorization, allowing an authorized attacker to perform tampering locally. Affected versions include Windows 10 Version 1607, Windows 10 Version 1809, Windows 10 Version 21H2, Windows 10 Version 22H2, Windows 11 version 23H2, Windows 11 Version 23H2, Windows 11 Version 24H2, Windows 11 Version 25H2, Windows 11 version 26H1, Windows 11 Version 26H2, Windows Server 2016, Windows Server 2016 (Server Core installation), Windows Server 2019, Windows Server 2019 (Server Core installation), Windows Server 2022, Windows Server 2025, and Windows Server 2025 (Server Core installation).

Defensive priority

Apply patches from Microsoft to address the vulnerability in Windows Overlay Filter.

Recommended defensive actions

  • Inventory affected Windows versions and servers
  • Apply patches from Microsoft
  • Monitor for local tampering attempts

Evidence notes

The CVE Program and NVD provide official records of the vulnerability. Microsoft offers a patch for the issue. The vulnerability exists in the Windows Overlay Filter due to missing authorization, allowing an authorized attacker to perform tampering locally. Affected versions include Windows 10 Version 1607, Windows 10 Version 1809, Windows 10 Version 21H2, Windows 10 Version 22H2, Windows 11 version 23H2, Windows 11 Version 23H2, Windows 11 Version 24H2, Windows 11 Version 25H2, and 26

Sources and references

Verified primary and authoritative sources

  • CVE-2026-96315 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-96315

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

  • CVE-2026-96315 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-96315

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

Supplemental references

  • Windows Overlay Filter Tampering Vulnerability

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/96xxx/CVE-2026-96315.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96315

    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.