HashiCorp Vault/Vault Enterprise up to 1.20.0 certificate validation

Summaryinfo

A vulnerability, which was classified as critical, has been found in HashiCorp Vault and Vault Enterprise up to 1.20.0. Impacted is an unknown function. Performing a manipulation results in certificate validation. This vulnerability was named CVE-2025-6037. The attack may be initiated remotely. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in HashiCorp Vault and Vault Enterprise up to 1.20.0. It has been classified as problematic. This affects an unknown functionality. The manipulation with an unknown input leads to a certificate validation vulnerability. CWE is classifying the issue as CWE-295. The product does not validate, or incorrectly validates, a certificate. This is going to have an impact on integrity. The summary by CVE is:

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.

It is possible to read the advisory at discuss.hashicorp.com. This vulnerability is uniquely identified as CVE-2025-6037 since 06/12/2025. The exploitability is told to be difficult. It is possible to initiate the attack remotely. Additional levels of successful authentication are necessary for exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1587.003 according to MITRE ATT&CK.

Upgrading to version 1.20.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-23391). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• HashiCorp

Name

• Vault
• Vault Enterprise

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18
• 1.19
• 1.20.0

License

• open-source

CPE 2.3info

• 🔒
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CPE 2.2info

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Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

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