6.7

CVE-2025-24531: opensc project pam_pkcs11 Return of Wrong Status Code

CVSS: 6.7v3.1MediumDeferred
AliasesSUSE-SU-2025:20130-1SUSE-SU-2025:20225-1UBUNTU-CVE-2025-24531
Published 16-01-2026Last modified 16-01-2026
Open JSON

Vulnerability summary

CVE-2025-24531 is a medium (CVSS 6.7) Return of Wrong Status Code vulnerability in opensc project pam_pkcs11. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 12.8% of scored vulnerabilities.

Overall risk
27/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.7/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.23%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 2
DSA-5864-1OPENSUSE-SU-2025:14738-1USN-7363-1

Timeline

  1. 16-01-2026
    PublishedVulnerability first disclosed.
  2. 16-01-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.23%

Chance of exploitation in the next 30 days

Percentile

13%

Versus all other CVEs

30-day change

0.00 pp

From 0.23% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.23%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Suse2 products
  • pam_pkcs11&distro=SUSE Linux Micro 6.0< 0.6.12-2.1
  • pam_pkcs11&distro=SUSE Linux Micro 6.1< 0.6.12-slfo.1.1_3.1
Debian1 product
  • pam-pkcs11< 0.6.12-1+deb12u1 | < 0.6.13-1
Opensc project1 product
Ubuntu1 product
  • pam-pkcs11< 0.6.12-2ubuntu0.24.04.1

4 vendors · 5 products

References

13 links
Show all 13 references