CVE-2025-6037 Vault Certificate Auth Method Did Not Validate Common Name For Non-CA Certificates

What is CVE-2025-6037?

CVE-2025-6037 is a medium-severity authentication bypass vulnerability in Hashicorp Vault, published on 1 Aug 2025. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official 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.

Weakness: CWE-295

Which versions are affected by CVE-2025-6037?

4 open source packages ship an affected version, including github.com/hashicorp/vault and vault. It affects 1 product.

Products include Hashicorp Vault.

How do I fix CVE-2025-6037?

Upgrade github.com/hashicorp/vault to 1.20.1 or later.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2025-6037 being exploited?

There is no known exploitation of CVE-2025-6037 in the wild and no public exploit code.

Other vulnerabilities in Hashicorp Vault

• CVE-2020-35192 Hardcoded credentials in n/a Critical 9.8
• CVE-2020-12757 Improper Input Validation in HashiCorp Vault Critical 9.8
• CVE-2025-6000 Arbitrary Remote Code Execution via Plugin Catalog Abuse Critical 9.1
• CVE-2022-40186 HashiCorp Vault vulnerable to incorrect metadata access Critical 9.1
• CVE-2022-36129 Missing authorization in n/a Critical 9.1

All Hashicorp Vault vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-vault-2025-6037, GHSA-6c5r-4wfc-3mcx, GO-2025-3836, MINI-whj8-4wpm-p4gj.