CVE-2025-24531

medium

Description

In OpenSC pam_pkcs11 before 0.6.13, pam_sm_authenticate() wrongly returns PAM_IGNORE in many error situations (such as an error triggered by a smartcard before login), allowing authentication bypass.

References

https://www.openwall.com/lists/oss-security/2025/02/06/3

https://github.com/OpenSC/pam_pkcs11/security/advisories/GHSA-7mf6-rg36-qgch

https://github.com/OpenSC/pam_pkcs11/releases

http://www.openwall.com/lists/oss-security/2025/02/06/7

http://www.openwall.com/lists/oss-security/2025/02/06/3

Details

Source: Mitre, NVD

Published: 2026-01-16

Updated: 2026-01-26

Risk Information

CVSS v2

Base Score: 5.6

Vector: CVSS2#AV:L/AC:H/Au:N/C:C/I:C/A:N

Severity: Medium

CVSS v3

Base Score: 6.7

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

Severity: Medium

EPSS

EPSS: 0.00014