CVE-2025-6037

Vault Certificate Auth Method Did Not Validate Common Name For Non-CA Certificates

Description

Vault and Vault Enterprise (“Vault”) TLS certificate auth method did not correctly validate client certificates when configured with a non-CA certificate as [+trusted certificate+|https://developer.hashicorp.com/vault/api-docs/auth/cert#certificate]. In this configuration, an attacker may be able to craft a malicious certificate that could be used to impersonate another user. Fixed in Vault Community Edition 1.20.1 and Vault Enterprise 1.20.1, 1.19.7, 1.18.12, and 1.16.23.

Category

6.8
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.02%
Vendor Advisory hashicorp.com
Affected: HashiCorp Vault
Affected: HashiCorp Vault Enterprise
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2025-6037?
CVE-2025-6037 has been scored as a medium severity vulnerability.
How to fix CVE-2025-6037?
To fix CVE-2025-6037, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-6037 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-6037 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-6037?
CVE-2025-6037 affects HashiCorp Vault, HashiCorp Vault Enterprise.
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