CVE-2026-34054

openssl on Windows built with openssldir set from the build machine (Uncontrolled Search Path Element)

CVSS 7.8 HIGHEPSS 0.7%CWE-427

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 7.8EPSS 0.7%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

31 Mar 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

vcpkg is a free and open-source C/C++ package manager. Prior to version 3.6.1#3, vcpkg's Windows builds of OpenSSL set openssldir to a path on the build machine, making that path be attackable later on customer machines. This issue has been patched in version 3.6.1#3.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

microsoft · vcpkg

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References

https://github.com/microsoft/vcpkg/commit/5111afdf55cc1429d9951e4c7b02010e659346a9 https://github.com/microsoft/vcpkg/pull/50518 https://github.com/microsoft/vcpkg/security/advisories/GHSA-p322-v6vw-vrq9