{"schemaVersion":3,"id":"CVE-2012-1423","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"The TAR file parser in Command Antivirus 5.2.11.5, Emsisoft Anti-Malware 5.1.0.1, F-Prot Antivirus 4.6.2.117, Fortinet Antivirus 4.2.254.0, Ikarus Virus Utilities T3 Command Line Scanner 1.1.97.0, K7 AntiVirus 9.77.3565, NOD32 Antivirus 5795, Norman Antivirus 6.06.12, PC Tools AntiVirus 7.0.3.5, Rising Antivirus 22.83.00.03, and VirusBuster 13.6.151.0 allows remote attackers to bypass malware detection via a POSIX TAR file with an initial MZ character sequence. NOTE: this may later be SPLIT into multiple CVEs if additional information is published showing that the error occurred independently in different TAR parser implementations.","dates":{"published":"2012-03-21T10:00:00.000Z","modified":"2024-08-06T18:53:37.278Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":4.3,"severity":"medium","version":"2.0","versionLabel":"v2.0","source":"NVD","vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":4.3,"severity":"medium","vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.8971,"percentile":0.9979,"severity":"critical","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.8971},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.8971,"percentile":0.9979}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.8971,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.8971,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