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MEDIUM · 4.2

CVE-2026-50302

Improper certificate validation in Windows Cryptographic Services allows an unauthorized attacker to bypass a security feature over a network.

Vulnerability Description

Improper certificate validation in Windows Cryptographic Services allows an unauthorized attacker to bypass a security feature over a network.

CVSS Score

4.2

MEDIUM

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

Affected Products

VendorProductVersions
MicrosoftWindows 10 21H2< 10.0.19044.7548
MicrosoftWindows 10 22H2< 10.0.19045.7548
MicrosoftWindows 11 24H2< 10.0.26100.8875
MicrosoftWindows 11 25H2< 10.0.26200.8875
MicrosoftWindows 11 26H1< 10.0.28000.2269
MicrosoftWindows Server 2022< 10.0.20348.5386
MicrosoftWindows Server 2025< 10.0.26100.33158

Related Weaknesses (CWE)

CWE-295

References

FAQ

What is CVE-2026-50302?

CVE-2026-50302 is a vulnerability with a CVSS score of 4.2 (MEDIUM). Improper certificate validation in Windows Cryptographic Services allows an unauthorized attacker to bypass a security feature over a network.

How severe is CVE-2026-50302?

CVE-2026-50302 has been rated MEDIUM with a CVSS base score of 4.2/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-50302?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Windows 10 21H2, Microsoft Windows 10 22H2, Microsoft Windows 11 24H2, Microsoft Windows 11 25H2, Microsoft Windows 11 26H1.