CVE-2026-34054CWE-427

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

High · published March 31, 2026

CVSS v3.1
7.8
EPSS
1%
Percentile
49.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00632 · 49.6th percentile
Weakness
CWE-427 · Uncontrolled Search Path Element
Published
2026-03-31T01:56Z
EPSS history
Timeline
  • 31 MAR 01:56Z
    openssl on Windows built with openssldir set from the build machine (Uncontrolled Search Path Element)
    cvelistv5