CVE-2026-34054 Details
Description
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.
A vulnerability exists in vcpkg's Windows builds of OpenSSL prior to version 3.6.1#3, where the 'openssldir' is set to a path on the build machine. This misconfiguration allows a low-privilege user to create a similar path on their machine, which could be exploited by a high-privilege user later on. The issue arises because OpenSSL searches the specified path for engines to load, potentially leading to unauthorized code execution or privilege escalation.
Users can upgrade to OpenSSL version 3.6.1#3, which addresses this vulnerability by not setting 'openssldir' in a way that could be exploited.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 1, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-427 | Uncontrolled Search Path Element | [email protected] |
Affected Products
No affected product data is available for this CVE.
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Mar 31, 2026 | New CVE Received | [email protected] |