CVE-2025-26678

HighCVSS 8.4/10Last modified Jun 17, 2026

Description

Improper access control in Windows Defender Application Control (WDAC) allows an unauthorized attacker to bypass a security feature locally.

Metrics

CVSS 3.1 8.4/10CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-284

Affected software

VendorProductVersions
MicrosoftWindows 10 Version 1809>= 10.0.17763.0, < 10.0.17763.7136
MicrosoftWindows 10 Version 21H2>= 10.0.19044.0, < 10.0.19044.5737
MicrosoftWindows 10 Version 22H2>= 10.0.19045.0, < 10.0.19045.5737
MicrosoftWindows 11 version 22H2>= 10.0.22621.0, < 10.0.22621.5189
MicrosoftWindows 11 version 22H3>= 10.0.22631.0, < 10.0.22631.5189
MicrosoftWindows 11 Version 23H2>= 10.0.22631.0, < 10.0.22631.5189
MicrosoftWindows 11 Version 24H2>= 10.0.26100.0, < 10.0.26100.3775
MicrosoftWindows Server 2019>= 10.0.17763.0, < 10.0.17763.7136
MicrosoftWindows Server 2019 (Server Core installation)>= 10.0.17763.0, < 10.0.17763.7136
MicrosoftWindows Server 2022>= 10.0.20348.0, < 10.0.20348.3453
MicrosoftWindows Server 2022, 23H2 Edition (Server Core installation)>= 10.0.25398.0, < 10.0.25398.1551
MicrosoftWindows Server 2025>= 10.0.26100.0, < 10.0.26100.3775
MicrosoftWindows Server 2025 (Server Core installation)>= 10.0.26100.0, < 10.0.26100.3775

References

Timeline

Published
Apr 8, 2025
Last modified
Jun 17, 2026
NVD status
Analyzed

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CVE-2025-26678: High severity, CVSS 8.4 | Vulnix