Is CVE-2026-34054 actively exploited?

No active exploitation of CVE-2026-34054 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-34054 be exploited remotely?

No. CVE-2026-34054 requires local access to exploit.

What is the CVSS score of CVE-2026-34054?

CVE-2026-34054 has a CVSS score of 7.8 (HIGH).

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HIGH

CVE-2026-34054

CWE-427Published: March 31, 2026· Updated: Apr 1, 2026

7.8

CVSS v3.1

EPSS:0.06%probability of exploitation in 30 daysPercentile:19.2th

Official 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.

NVD Source

Technical Analysis

CVE-2026-34054 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.