CVE-2025-6015: CWE-307: Improper Restriction of Excessive Authentication Attempts in HashiCorp Vault
CVE-2025-6015 is a medium severity vulnerability in HashiCorp Vault and Vault Enterprise that allows bypassing login MFA rate limits and reusing TOTP tokens. This improper restriction of excessive authentication attempts could enable attackers to attempt multiple authentication tries without being blocked. 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.
AI Analysis
Technical Summary
HashiCorp Vault and Vault Enterprise versions prior to the fixed releases have an improper restriction of excessive authentication attempts (CWE-307). Specifically, the login MFA rate limits can be bypassed, and TOTP tokens can be reused, weakening the multi-factor authentication protections. This vulnerability was assigned CVE-2025-6015 and has a CVSS 3.1 base score of 5.7 (medium severity). The issue is addressed in Vault Community Edition 1.20.1 and Vault Enterprise 1.20.1, 1.19.7, 1.18.12, and 1.16.23.
Potential Impact
Successful exploitation allows attackers to bypass MFA rate limiting controls and reuse TOTP tokens, potentially enabling unauthorized access to Vault accounts. The confidentiality impact is high due to possible unauthorized access, but integrity and availability impacts are not indicated.
Mitigation Recommendations
Upgrade to Vault Community Edition 1.20.1 or Vault Enterprise versions 1.20.1, 1.19.7, 1.18.12, or 1.16.23 where this vulnerability is fixed. No other mitigation or temporary workaround is indicated in the vendor advisory.
CVE-2025-6015: CWE-307: Improper Restriction of Excessive Authentication Attempts in HashiCorp Vault
Description
CVE-2025-6015 is a medium severity vulnerability in HashiCorp Vault and Vault Enterprise that allows bypassing login MFA rate limits and reusing TOTP tokens. This improper restriction of excessive authentication attempts could enable attackers to attempt multiple authentication tries without being blocked. 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.
CVSS v3.1
Score 5.7medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
HashiCorp Vault and Vault Enterprise versions prior to the fixed releases have an improper restriction of excessive authentication attempts (CWE-307). Specifically, the login MFA rate limits can be bypassed, and TOTP tokens can be reused, weakening the multi-factor authentication protections. This vulnerability was assigned CVE-2025-6015 and has a CVSS 3.1 base score of 5.7 (medium severity). The issue is addressed in Vault Community Edition 1.20.1 and Vault Enterprise 1.20.1, 1.19.7, 1.18.12, and 1.16.23.
Potential Impact
Successful exploitation allows attackers to bypass MFA rate limiting controls and reuse TOTP tokens, potentially enabling unauthorized access to Vault accounts. The confidentiality impact is high due to possible unauthorized access, but integrity and availability impacts are not indicated.
Mitigation Recommendations
Upgrade to Vault Community Edition 1.20.1 or Vault Enterprise versions 1.20.1, 1.19.7, 1.18.12, or 1.16.23 where this vulnerability is fixed. No other mitigation or temporary workaround is indicated in the vendor advisory.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- HashiCorp
- Date Reserved
- 2025-06-11T19:05:27.750Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 688d04c8ad5a09ad00cb188c
Added to database: 08/01/2025, 18:17:44 UTC
Last enriched: 09/08/2026, 13:07:43 UTC
Last updated: 09/10/2026, 19:36:51 UTC
Views: 268
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