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MEDIUM · 5.5

CVE-2026-61936

Missing authorization in Windows Defender Firewall Service allows an authorized attacker to bypass a security feature locally.

Vulnerability Description

Missing authorization in Windows Defender Firewall Service allows an authorized attacker to bypass a security feature locally.

CVSS Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE

Affected Products

VendorProductVersions
MicrosoftWindows 10 1809< 10.0.17763.9115
MicrosoftWindows 10 21H2< 10.0.19044.7663
MicrosoftWindows 10 22H2< 10.0.19045.7663
MicrosoftWindows 11 23H2< 10.0.22631.7517
MicrosoftWindows 11 24H2< 10.0.26100.9106
MicrosoftWindows 11 25H2< 10.0.26200.9106
MicrosoftWindows 11 26H1< 10.0.28000.2704
MicrosoftWindows Server 2019< 10.0.17763.9115
MicrosoftWindows Server 2022< 10.0.20348.5440
MicrosoftWindows Server 2025< 10.0.26100.33222

Related Weaknesses (CWE)

CWE-862

References

FAQ

What is CVE-2026-61936?

CVE-2026-61936 is a vulnerability with a CVSS score of 5.5 (MEDIUM). Missing authorization in Windows Defender Firewall Service allows an authorized attacker to bypass a security feature locally.

How severe is CVE-2026-61936?

CVE-2026-61936 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-61936?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Windows 10 1809, Microsoft Windows 10 21H2, Microsoft Windows 10 22H2, Microsoft Windows 11 23H2, Microsoft Windows 11 24H2.