Main Vulnerability Database Vulnerabilities #VU113655

Improper Certificate Validation in Vault Enterprise and Vault - CVE-2025-6037

Published: August 5, 2025

Vulnerability identifier: #VU113655

CSH Severity: Medium

CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-6037

CWE-ID: CWE-295

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to impersonate other application users.

The vulnerability exists due to the application does not correctly validate client certificates when configured with a non-CA certificate as trusted certificate. A remote attacker can craft a malicious certificate that could be used to impersonate another user.

Affected software

Vault Enterprise
Vault

How to mitigate CVE-2025-6037

Install updates from vendor's website.

Vault Enterprise - addressed in versions 1.16.23, 1.18.12, 1.19.7, 1.20.1
Vault - update to 1.20.1

External References

https://discuss.hashicorp.com/t/hcsec-2025-18-vault-certificate-auth-method-did-not-validate-common-name-for-non-ca-certificates/76037

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