Improper Certificate Validation in Visual Studio - CVE-2026-70194
Published: October 14, 2026
Vulnerability identifier: #VU154631
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-70194
CWE-ID: CWE-295
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass certificate validation mechanisms.
The vulnerability exists due to improper certificate validation in .NET Framework when validating certificates supplied over a network. A remote attacker can provide arbitrary certificates that do not have proper signatures to bypass certificate validation mechanisms.
Affected software
Visual Studio
How to mitigate CVE-2026-70194
Install security update from vendor's website.
Visual Studio - update to 17.14.42