Medium severity · published Aug 1, 2025
CVE-2025-6037
Vault and Vault Enterprise (“Vault”) TLS certificate auth method did not correctly validate client certificates when configured with a non-CA certificate as [+trusted…
6.8
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 17% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VA
Vault · Hashicorp
before 1.16.23; before 1.20.1; 1.17.0 before 1.18.12; 1.19.0 before 1.19.7; 1.20.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-6037
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-6037
Vendor Advisory
https://discuss.hashicorp.com/t/hcsec-2025-18-vault-certificate-auth-method-did-not-validate-common-name-for-non-ca-certificates/76037
More from Vault
9.8
CVE-2024-2048
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
9.8
CVE-2020-35192
The official vault docker images before 0.11.6 contain a blank password for a root user
9.8
CVE-2020-12757
HashiCorp Vault and Vault Enterprise 1.4.0 and 1.4.1, when configured with the GCP Secrets Engine, may incorrectly generate GCP Credentials with the default time-to-live lease…
9.1
CVE-2025-6000
A privileged Vault operator within the root namespace with write permission to {{sys/audit}} may obtain code execution on the underlying host if a plugin directory is set in…
9.1
CVE-2022-40186
An issue was discovered in HashiCorp Vault and Vault Enterprise before 1.11.3