CVE-2025-33069: Windows App Control for Business Security Feature Bypass Vulnerability

Severity: medium (CVSS 5.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-06-10 · updated 2026-06-17
Weakness: CWE-347

Description

Improper verification of cryptographic signature in App Control for Business (WDAC) allows an unauthorized attacker to bypass a security feature locally.

Affected products

Microsoft Windows 11: before 10.0.26100.4270 — fixed in 10.0.26100.4270
Microsoft Windows Server 2025: before 10.0.26100.4270 — fixed in 10.0.26100.4270
Microsoft Windows 11: from 10.0.26100.0 before 10.0.26100.4349 — fixed in 10.0.26100.4349
Microsoft Windows Server 2025: from 10.0.26100.0 before 10.0.26100.4349 — fixed in 10.0.26100.4349

How to fix

Upgrade to a fixed version: Microsoft Windows 11 10.0.26100.4270; Microsoft Windows Server 2025 10.0.26100.4270; Microsoft Windows 11 10.0.26100.4349; Microsoft Windows Server 2025 10.0.26100.4349. Check the vendor advisory for mitigations.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-33069

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