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CVE WatchAug 11, 2026

CVE-2026-62772

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

CVSS

7.8

High

EPSS

—

KEV

—

Exploit Today

—

0-100

Published: Aug 11, 2026 · Last modified: Aug 11, 2026 · CWE-122

EPSS · 30d

Not enough EPSS history yet.

Technical description

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

Official references

msrc.microsoft.comhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62772

Related CVEs

CVECVSSEPSSKEVRExploitTitleMod.

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———Heap-based buffer overflow in Windows DNS allows an authorized attacker to elevate privileges locally.5h CVE-2026-703046.7 MED

———Heap-based buffer overflow in Windows DNS allows an authorized attacker to elevate privileges locally.5h