CVE-2025-6011: HashiCorp Vault · Observable Discrepancy
Affects HashiCorp VaultSource CVE Database V5
Not known to be exploited · CVSS 3.7 Low : upgrade to 1.20.1 when convenient.
Data as of 26 Oct 2026, 17:16 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 29% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 1.20.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:NExploitation evidence
Disclosed: evidence found.
CVE published 1 Aug 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade HashiCorp Vault to 1.20.1.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| HashiCorp Vault | Affected
| Fixed in
|
AI-suggested
Apply the official patches provided by HashiCorp: upgrade to Vault Community Edition 1.20.1 or Vault Enterprise 1.20.1, 1.19.7, 1.18.12, or 1.16.23. These versions contain fixes that eliminate the timing side channel vulnerability. No additional mitigation steps are indicated by the vendor advisory.
Description
CVE-2025-6011 is a timing side channel vulnerability in HashiCorp Vault's userpass authentication method that allows an attacker to distinguish between existing and non-existing usernames. This could enable username enumeration. The issue is fixed in Vault Community Edition 1.20.1 and Vault Enterprise versions 1.20.1, 1.19.7, 1.18.12, and 1.16.23. The vulnerability has a low severity score of 3.7 and does not impact confidentiality, integrity, or availability beyond username disclosure.