Vulnerability in Hashicorp Vault
CVE-2025-6011
A timing side channel in Vault and Vault Enterprise’s (“Vault”) userpass auth method allowed an attacker to distinguish between existing and non-existing users, and potentially enumerate valid usernames for Vault’s Userpass auth method. Fixed in Vault Community Edition 1.20.1 and Vault Enterprise 1.20.1, 1.19.7, 1.18.12, and 1.16.23.
EPSS: 0.003 (24.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Hashicorp Vault — versions 1.20.0, 0
- Hashicorp Vault Enterprise — versions 0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@hashicorp.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-6011?
- CVE-2025-6011 is a low-severity vulnerability in Hashicorp Vault, classified under Observable Discrepancy. CVSS score: 3.7/10. Published 2025-08-01.
- How severe is CVE-2025-6011?
- Low severity. CVSS v3 base score is 3.7 out of 10.
- Is CVE-2025-6011 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.