Is CVE-2025-3879 actively exploited?

No active exploitation of CVE-2025-3879 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2025-3879 be exploited remotely?

Yes. CVE-2025-3879 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2025-3879?

CVE-2025-3879 has a CVSS score of 8.8 (HIGH).

HOME VULNERABILITIESCVE-2025-3879

HIGH

CVE-2025-3879

CWE-863Published: May 2, 2025· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official Description

Vault Community, Vault Enterprise (“Vault”) Azure Auth method did not correctly validate the claims in the Azure-issued token, resulting in the potential bypass of the bound_locations parameter on login. Fixed in Vault Community Edition 1.19.1 and Vault Enterprise 1.19.1, 1.18.7, 1.17.14, 1.16.18.

NVD Source

Technical Analysis

CVE-2025-3879 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

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 8.8.