Security advisory

{
  "id": "c892eeee11cffe70ede1fe919575133f594f3b365fd67a19b456478f9d1b927c",
  "url": "https://osv.dev/vulnerability/CVE-2025-24531",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2025-24531",
    "summary": "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.",
    "evidence": "osv:CVE-2025-24531",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2025-24531",
      "aliases": [
        "CVE-2025-24531",
        "GHSA-7mf6-rg36-qgch"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/opensc/pam_pkcs11",
              "type": "GIT",
              "events": [
                {
                  "introduced": "bb2e3f3a95e44fdf44b0d5a4b377db3179021380"
                },
                {
                  "fixed": "b8dbe6370d36a6a11a466d5f0ee285804103e030"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0.6.12"
                      },
                      {
                        "fixed": "0.6.13"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "11"
                      },
                      {
                        "fixed": "0.6.13"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "pam_pkcs11-0.6.12"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-24531.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:30.146124861Z",
      "provider": "osv",
      "references": [
        "https://www.openwall.com/lists/oss-security/2025/02/06/3",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/24xxx/CVE-2025-24531.json",
        "https://github.com/OpenSC/pam_pkcs11/security/advisories/GHSA-7mf6-rg36-qgch",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-24531",
        "https://github.com/OpenSC/pam_pkcs11/releases"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-393"
        ],
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/24xxx/CVE-2025-24531.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-24531",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 497092,
  "published_at": "2026-01-16T00:00:00+00:00"
}