Improper Certificate Validation in Windows and Windows Server - CVE-2026-50302
Published: July 15, 2026
Vulnerability identifier: #VU137785
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-50302
CWE-ID: CWE-295
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Microsoft
Affected software:
Windows
Windows Server
Windows
Windows Server
Detailed vulnerability description
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to improper validation of server certificate in Windows Cryptographic Services. A remote attacker can bypass the application's cryptographic protections.
How to mitigate CVE-2026-50302
Install updates from vendor's website.