PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-88107 Microsoft CVE debrief

An elevation of privilege vulnerability exists in the Windows Cloud Files Mini Filter Driver due to a use-after-free condition. This allows an authorized attacker to elevate privileges locally. Multiple Windows versions are affected, including Windows 10, Windows 11, and Windows Server. The vulnerability can be exploited by an attacker with local access to the system, potentially leading to system compromise if not patched. Defenders should assess exposure, apply patches, and monitor for suspicious activity to prevent local privilege escalation. It is essential to verify patch application and review system logs for potential security incidents.

Vendor
Microsoft
Product
Windows 10 Version 1809
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, particularly those managing Windows 10, Windows 11, and Windows Server environments, should assess exposure and apply patches. Monitoring for local privilege escalation attempts and reviewing system logs for suspicious activity is recommended.

Why it matters

CVE-2026-88107 is a high-severity elevation of privilege vulnerability in the Windows Cloud Files Mini Filter Driver. Defenders should assess exposure, apply patches, and monitor for suspicious activity to prevent local privilege escalation.

  • Local privilege escalation is possible
  • Authorized attackers can elevate privileges
  • System compromise may occur if not patched
  • Verification of patch application is necessary

Technical summary

The Windows Cloud Files Mini Filter Driver is vulnerable to a use-after-free condition, allowing an authorized attacker to elevate privileges locally. The vulnerability affects multiple Windows versions, including Windows 10, Windows 11, and Windows Server.

Defensive priority

High

Recommended defensive actions

  • Assess exposure for Windows 10, Windows 11, and Windows Server systems
  • Verify and apply Microsoft patches for affected versions
  • Monitor for local privilege escalation attempts
  • Review 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 Windows versions, including Windows 10, Windows 11, and Windows Server. Defenders should verify patch application and review system logs for suspicious activity. The source item details and official CVE Program record provide additional information on the vulnerability. The official NIST NVD vulnerability detail page offers a '

Sources and references

Verified primary and authoritative sources

  • CVE-2026-88107 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-88107

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

  • CVE-2026-88107 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-88107

    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.