{"schemaVersion":3,"id":"USN-4978-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"firefox vulnerabilities\n\nMultiple security issues were discovered in Firefox. If a user were\ntricked into opening a specially crafted website, an attacker could\npotentially exploit these to cause a denial of service, re-enable\ncamera devices without an additional permission prompt, spoof the browser\nUI, or execute arbitrary code. (CVE-2021-29959, CVE-2021-29961,\nCVE-2021-29966, CVE-2021-29967)\n\nIt was discovered that filenames printed from private browsing mode were\nincorrectly retained in preferences. A local attacker could potentially\nexploit this to obtain sensitive information. (CVE-2021-29960)","dates":{"published":"2021-06-02T19:35:40.000Z","modified":"2026-04-22T10:15:43.360Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"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":[],"affected":[{"vendor":"ubuntu","product":"firefox","name":"firefox","label":"firefox","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/firefox","purlType":"deb","versions":[{"text":"< 89.0+build2-0ubuntu0.18.04.2","noFixRecorded":false,"fixedIn":null},{"text":"< 89.0+build2-0ubuntu0.20.04.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 89.0+build2-0ubuntu0.18.04.2 | < 89.0+build2-0ubuntu0.20.04.2","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-4978-1","label":"ubuntu.com/security/notices/USN-4978-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-29959","label":"ubuntu.com/security/CVE-2021-29959","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2021-29960","label":"ubuntu.com/security/CVE-2021-29960","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2021-29961","label":"ubuntu.com/security/CVE-2021-29961","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2021-29966","label":"ubuntu.com/security/CVE-2021-29966","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2021-29967","label":"ubuntu.com/security/CVE-2021-29967","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2021-29959","CVE-2021-29960","CVE-2021-29961","CVE-2021-29966","CVE-2021-29967"],"downstream":[],"duplicates":[],"related":["CVE-2021-29959","CVE-2021-29960","CVE-2021-29961","CVE-2021-29966","CVE-2021-29967"]},"timeline":[{"kind":"published","date":"2021-06-02T19:35:40.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-22T10:15:43.360Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T22:20:29.213Z","stale":false,"partial":false}}