Information Exposure Through Timing Discrepancy in Vault and Vault Enterprise - CVE-2025-6011
Published: August 5, 2025
Vulnerability identifier: #VU113654
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-6011
CWE-ID: CWE-208
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: HashiCorp
Affected software:
Vault
Vault Enterprise
Vault
Vault Enterprise
Detailed vulnerability description
The vulnerability allows a remote attacker to guess existing user accounts.
The vulnerability exists due to the way the application handles authentication requests when authenticating users with username and password. A remote attacker can distinguish between existing and non-existing users, and potentially enumerate valid usernames for Vault’s userpass auth method.
How to mitigate CVE-2025-6011
Install updates from vendor's website.