# CVE-2025-24531

## Summary

- **CVE ID:** CVE-2025-24531
- **Severity:** MEDIUM
- **CVSS Score:** 6.7 (CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N)
- **CWE:** CWE-393
- **Published:** Jan 16, 2026
- **Last Modified:** Mar 12, 2026

## 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.

## Affected Products

- OpenSC project — pam_pkcs11 (0.6.12)

## References

- [CNA](https://github.com/OpenSC/pam_pkcs11/security/advisories/GHSA-7mf6-rg36-qgch)
- [CNA](https://github.com/OpenSC/pam_pkcs11/releases)
- [CNA](https://www.openwall.com/lists/oss-security/2025/02/06/3)
- [CVE](http://www.openwall.com/lists/oss-security/2025/02/06/3)
- [CVE](http://www.openwall.com/lists/oss-security/2025/02/06/7)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.24%
- **EPSS Percentile:** 15.7

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._