High severity7.8NVD Advisory· Published Aug 11, 2026· Updated Aug 11, 2026
CVE-2026-62772
CVE-2026-62772
Description
Heap-based buffer overflow in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to elevate privileges locally.
Affected products
1Patches
Vulnerability mechanics
References
1News mentions
1- Microsoft Patch Tuesday Update August 2026 – 394 Vulnerabilities Fixed, Including 3 Zero-DaysCyber Security News · Aug 11, 2026