CVE-2025-55299

CRITICAL

VaulTLS < 0.9.1 - Unauthenticated Authentication Bypass via Empty Password

Title source: llm
STIX 2.1

Description

VaulTLS is a modern solution for managing mTLS (mutual TLS) certificates. Prior to 0.9.1, user accounts created through the User web UI have an empty but not NULL password set, attackers can use this to login with an empty password. This is combined with that fact, that previously disabling the password based login only effected the frontend, but still allowed login via the API. This vulnerability is fixed in 0.9.1.

References (2)

Core 2

Scores

CVSS v3 9.4
EPSS 0.0022
EPSS Percentile 11.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-521
Status published
Products (1)
7ritn/VaulTLS < 0.9.1
Published Aug 18, 2025
Tracked Since Feb 18, 2026