{
  "affected": [
    {
      "database_specific": {
        "unresolved_ranges": [
          {
            "events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "78.0"
              }
            ]
          }
        ]
      }
    }
  ],
  "details": "When the Windows DLL \"webauthn.dll\" was missing from the Operating System, and a malicious one was placed in a folder in the user's %PATH%, Firefox may have loaded the DLL, leading to arbitrary code execution. *Note: This issue only affects the Windows operating system; other operating systems are unaffected.* This vulnerability affects Firefox \u003c 78.",
  "id": "CVE-2020-12423",
  "modified": "2026-03-15T21:48:43.901761272Z",
  "published": "2020-07-09T15:15:12.193Z",
  "references": [
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.mozilla.org/security/advisories/mfsa2020-24/"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1642400"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}