Timing Side Channel Vulnerability in Vault and Vault Enterprise
CVE-2025-6011

3.7LOW

Key Information:

Vendor

Hashicorp
Status
Vault
Vault Enterprise
Vendor
CVE Published:
1 August 2025

What is CVE-2025-6011?

A timing side channel vulnerability in Vault and Vault Enterprise's userpass authentication method enables attackers to differentiate between existing and non-existing users. This exploit allows potential enumeration of valid usernames, posing security risks to user account integrity. Prompt updates are necessary to mitigate this issue, with fixes provided in Vault Community Edition 1.20.1 and various versions of Vault Enterprise.

Affected Version(s)

Vault 64 bit 0 < 1.20.1

Vault Enterprise 64 bit 0 < 1.20.1

References

https://discuss.hashicorp.com/t/hcsec-2025-15-timing-side...

CVSS V3.1

Score:
3.7
Severity:
LOW
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2025-6011 : Timing Side Channel Vulnerability in Vault and Vault Enterprise