CVE-2025-11621: vault — Fix

Description

Vault and Vault Enterprise’s (“Vault”) AWS Auth method may be susceptible to authentication bypass if the role of the configured bound_principal_iam is the same across AWS accounts, or uses a wildcard. This vulnerability, CVE-2025-11621, is fixed in Vault Community Edition 1.21.0 and Vault Enterprise 1.21.0, 1.20.5, 1.19.11, and 1.16.27

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CVSS v3.1 Score

8.1

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Weakness Type (CWE)

CWE-288 CWE-288

Affected Products

Vendor	Product	Versions
hashicorp	vault	0.6.0 — 1.16.27
hashicorp	vault	0.6.0 — 1.21.0
hashicorp	vault	1.18.0 — 1.18.15
hashicorp	vault	1.19.0 — 1.19.11
hashicorp	vault	1.20.0 — 1.20.5

References

Advisories & Patches

https://discuss.hashicorp.com/t/hcsec-2025-30-vault-aws-auth-method-authentication-bypass-through-mishandling-of-cache-entries/76709

Frequently Asked Questions

What is CVE-2025-11621? +

Vault and Vault Enterprise’s (“Vault”) AWS Auth method may be susceptible to authentication bypass if the role of the configured bound_principal_iam is the same across AWS accounts, or uses a wildcard. This vulnerability, CVE-2025-11621, is fixed in Vault Community Edition 1.21.0 and Vault Enterprise 1.21.0, 1.20.5, 1.19.11, and 1.16.27 It has a CVSS v3.1 base score of 8.1 (HIGH).

How severe is CVE-2025-11621? +

CVE-2025-11621 has a CVSS v3.1 score of 8.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-11621? +

CVE-2025-11621 affects products from hashicorp, specifically: vault. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-11621? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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