CVE-2025-11621

HIGH

HashiCorp Vault 0.6.0-1.16.26, 1.17.0-1.20.4, 1.21.0 - Authentication Bypass via AWS Auth Method Cache Mishandling

Title source: llm

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

References (1)

Core 1

Core References

Vendor Advisory

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

Scores

CVSS v3 8.1

EPSS 0.0050

EPSS Percentile 38.4%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-288

Status published

Products (3)

hashicorp/vault 0.6.0 - 1.16.27

hashicorp/vault 0.6.0 - 1.21.0

hashicorp/vault 0.6.0 - 1.21.0Go

Published Oct 23, 2025

Tracked Since Feb 18, 2026