{"schemaVersion":3,"id":"USN-7263-1","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, obtain sensitive\ninformation across domains, or execute arbitrary code. (CVE-2025-1011,\nCVE-2025-1013, CVE-2025-1014, CVE-2025-1016, CVE-2025-1017, CVE-2025-1018,\nCVE-2025-1019, CVE-2025-1020)\n\nIvan Fratric discovered that Firefox did not properly handle XSLT data,\nleading to a use-after-free vulnerability. An attacker could potentially\nexploit this issue to cause a denial of service, or execute arbitrary code.\n(CVE-2025-1009)\n\nAtte Kettunen discovered that Firefox did not properly manage memory in\nthe Custom Highlight API, leading to a use-after-free vulnerability. An\nattacker could potentially exploit this issue to cause a denial of service,\nor execute arbitrary code. (CVE-2025-1010)\n\nNils Bars discovered that Firefox did not properly manage memory during\nconcurrent delazification, leading to a use-after-free vulnerability.\nAn attacker could potentially exploit this issue to cause a denial of\nservice, or execute arbitrary code. (CVE-2025-1012)","dates":{"published":"2025-02-11T00:55:41.000Z","modified":"2026-04-27T17:43:31.741Z","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":"< 135.0+build2-0ubuntu0.20.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 135.0+build2-0ubuntu0.20.04.1","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-7263-1","label":"ubuntu.com/security/notices/USN-7263-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2025-1009","label":"ubuntu.com/security/CVE-2025-1009","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2025-1010","label":"ubuntu.com/security/CVE-2025-1010","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2025-1011","label":"ubuntu.com/security/CVE-2025-1011","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2025-1012","label":"ubuntu.com/security/CVE-2025-1012","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2025-1013","label":"ubuntu.com/security/CVE-2025-1013","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2025-1014","label":"ubuntu.com/security/CVE-2025-1014","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2025-1016","label":"ubuntu.com/security/CVE-2025-1016","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2025-1017","label":"ubuntu.com/security/CVE-2025-1017","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2025-1018","label":"ubuntu.com/security/CVE-2025-1018","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2025-1019","label":"ubuntu.com/security/CVE-2025-1019","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2025-1020","label":"ubuntu.com/security/CVE-2025-1020","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2025-1009","CVE-2025-1010","CVE-2025-1011","CVE-2025-1012","CVE-2025-1013","CVE-2025-1014","CVE-2025-1016","CVE-2025-1017","CVE-2025-1018","CVE-2025-1019","CVE-2025-1020"],"downstream":[],"duplicates":[],"related":["CVE-2025-1009","CVE-2025-1010","CVE-2025-1011","CVE-2025-1012","CVE-2025-1013","CVE-2025-1014","CVE-2025-1016","CVE-2025-1017","CVE-2025-1018","CVE-2025-1019","CVE-2025-1020"]},"timeline":[{"kind":"published","date":"2025-02-11T00:55:41.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-27T17:43:31.741Z","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":"2026-10-20T04:03:09.884Z","stale":false,"partial":false}}