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Vulnerability IntelligenceMICROSOFT-CVE-2026-34343

MICROSOFT-CVE-2026-34343

HIGH7.8

Windows Application Identity (AppID) Subsystem Elevation of Privilege Vulnerability

Published May 12, 2026

Modified 5 days ago

Details

Heap-based buffer overflow in Windows Application Identity (AppID) Subsystem allows an authorized attacker to elevate privileges locally.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34343

CVSS Analysis

CVSS v2.0

7.8

Upstream

Ecosystems

Timeline

PublishedMay 12, 2026

ModifiedMay 14, 2026

MICROSOFT-CVE-2026-34343 | Mondoo Vulnerability Intelligence