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CVE-2026-62772

nvd nist
Published: Aug 11, 2026Modified: Aug 13, 2026

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7.8
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitability: 1.8 / Impact: 5.9
Source: secure@microsoft.com (Secondary)

Description

Heap-based buffer overflow in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to elevate privileges locally.

Affected (2)

Microsoft
1 product
Windows 11 26h1
Configuration A
2 vulnerable
Vulnerable SoftwareAffected Versions
Microsoft
Windows 11 26h1
Before 10.0.28000.2704
Windows 11 26h1
Before 10.0.28000.2704

Related CWEs

CWE-122
Heap-based Buffer Overflow
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

References (1)

Source: secure@microsoft.com
PatchVendor Advisory

Timeline

No history available yet.