CVE-2026-34054

7.8 highEPSS 0.7%

High (7.8). EPSS 0.7% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.8 high

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

EPSS: 0.7% chance of exploitation in the next 30 days; higher than 54% of CVEs (scores of 2026-10-31)
CWE: CWE-427
Published: 2026-03-31
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

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

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