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

CVE-2026-34054 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of OpenSSL are affected by CVE-2026-34054?

CVE-2026-34054 is a local privilege escalation vulnerability in vcpkg versions prior to 3.6.1#3 that allows low-privileged Windows users to gain full system control through a hardcoded build path in…. A patch is available.

OpenSSL CVE-2026-34054

EUVD-2026-17285 HIGH

Uncontrolled Search Path Element (CWE-427)

2026-03-31 GitHub_M

Information Disclosure OpenSSL Microsoft

7.8

CVSS 3.1

CVSS VectorNVD

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Updated

Apr 16, 2026 - 06:10 EUVD-patch-fix

executive_summary

Re-analysis Queued

Apr 16, 2026 - 05:29 backfill_euvd_patch

patch_released

Patch available

Apr 16, 2026 - 05:29 EUVD

3.6.1

EUVD ID Assigned

Mar 31, 2026 - 02:30 euvd

EUVD-2026-17285

Analysis Generated

Mar 31, 2026 - 02:30 vuln.today

CVE Published

Mar 31, 2026 - 01:56 nvd

HIGH 7.8

DescriptionNVD

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.

AnalysisAI

Local privilege escalation via hardcoded build path in vcpkg's OpenSSL binaries affects Windows users of the C/C++ package manager prior to version 3.6.1#3. The vulnerability allows authenticated local attackers with low privileges to achieve high confidentiality, integrity, and availability impact (CVSS 7.8) by exploiting the hardcoded openssldir path that references the original build machine. …

RemediationAI

Within 24 hours: Inventory all systems running vcpkg and identify instances prior to version 3.6.1#3. Within 7 days: Apply vendor-released patch by upgrading to vcpkg version 3.6.1#3 or later on all Windows development and build systems. …

Analysis

Detailed AI-generated intelligence summary covering attack vector, impact assessment, affected versions, remediation steps, and indicators of compromise.

POChttps://••••••••••.com/exploit

PATCHhttps://••••••••••.com/patch

ADVISORYhttps://••••••••••.com/advisory

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CVE-2026-34054 vulnerability details – vuln.today

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OpenSSL CVE-2026-34054

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

AnalysisAI

RemediationAI

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External POC / Exploit Code