{"schemaVersion":3,"id":"CVE-2021-25803","aliases":["UBUNTU-CVE-2021-25803","DEBIAN-CVE-2021-25803"],"status":"published","duplicateOf":null,"title":null,"description":"A buffer overflow vulnerability in the vlc_input_attachment_New component of VideoLAN VLC Media Player 3.0.11 allows attackers to cause an out-of-bounds read via a crafted .avi file.","dates":{"published":"2021-07-26T16:26:58.000Z","modified":"2024-08-03T20:11:28.449Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.1,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":7.1,"severity":"high","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H","exploitability":4.6,"impact":8.7,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Debian","score":7.1,"severity":"high","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H","exploitability":4.6,"impact":8.7,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":7.1,"severity":"high","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":5.8,"severity":"medium","vector":"AV:N/AC:M/Au:N/C:P/I:N/A:P","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00741,"percentile":0.53853,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.00741},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00741,"percentile":0.53853}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00741,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00741,"percentile":0.53853}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-190","name":"Integer Overflow or Wraparound","description":"The product performs a calculation that can\n         produce an integer overflow or wraparound when the logic\n         assumes that the resulting value will always be larger than\n         the original value. This occurs when an integer value is\n         incremented to a value that is too large to store in the\n         associated representation. When this occurs, the value may\n         become a very small or negative number.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"Medium","url":"https://cwe.mitre.org/data/definitions/190.html"}],"affected":[{"vendor":"debian","product":"vlc","name":"vlc","label":"vlc","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/vlc","purlType":"deb","versions":[{"text":"< 3.0.12-1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.0.12-1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"vlc","name":"vlc","label":"vlc","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/vlc","purlType":"deb","versions":[{"text":"< 2.2.2-5ubuntu0.16.04.5+esm2","noFixRecorded":false,"fixedIn":null},{"text":"< 3.0.8-0ubuntu18.04.1+esm1","noFixRecorded":false,"fixedIn":null},{"text":"< 3.0.9.2-1ubuntu0.1~esm1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.2.2-5ubuntu0.16.04.5+esm2 | < 3.0.8-0ubuntu18.04.1+esm1 | < 3.0.9.2-1ubuntu0.1~esm1","eol":null,"hubHref":null},{"vendor":"videolan","product":"vlc_media_player","name":"vlc media player","label":"vlc_media_player","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"3.0.11","noFixRecorded":false,"fixedIn":null}],"versionsText":"3.0.11","eol":null,"hubHref":"/vendor/videolan/vlc_media_player"}],"affectedCount":3,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://code.videolan.org/videolan/vlc-3.0/-/commit/56cbe9c4b59edbdc5e1bb2687992f3bbf492eccb","label":"code.videolan.org/videolan/vlc-3.0/-/commit/56cbe9c4b59edbdc5e1bb2687992f3bbf492eccb","hostname":"code.videolan.org","tags":["X Refsource MISC","REPORT","Vendor Advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-25803","label":"ubuntu.com/security/CVE-2021-25803","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/notices/USN-6180-1","label":"ubuntu.com/security/notices/USN-6180-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-25803","label":"www.cve.org/CVERecord?id=CVE-2021-25803","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-25803","label":"security-tracker.debian.org/tracker/CVE-2021-25803","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":["DLA-2728-1","DSA-4834-1","USN-6180-1"],"duplicates":[],"related":["USN-6180-1"]},"timeline":[{"kind":"published","date":"2021-07-26T16:26:58.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-03T20:11:28.449Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":29,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T20:20:17.127Z","stale":false,"partial":false}}