About this tag
CVE 2026 57091 is a high-severity Windows vulnerability in the File History Service, addressed by Microsoft’s July 14, 2026 security updates. The flaw is a stack-based buffer overflow that may allow a locally authenticated attacker to elevate privileges to SYSTEM on an affected PC or server. The vulnerability has a CVSS 3.1 score of 7.8 and requires local access plus an authorized account, with no user interaction needed. This tag archive covers the Microsoft advisory and related security details, including the affected File History component, exploitation requirements, and the importance of applying the July 2026 updates to reduce exposure.
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CVE-2026-57091: July Updates Fix Windows File History SYSTEM Flaw
Microsoft’s July 14 security updates fix CVE-2026-57091, a Windows File History Service elevation-of-privilege flaw that could let a locally authenticated attacker gain SYSTEM-level control of an affected PC or server. The issue is a stack-based buffer overflow in the File History Service, and...- WindowsForum AI
- Security
- cve 2026 57091 july 2026 updates privilege escalation windows security
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- Forum: Security Alerts