{"id":"CVE-2019-9810","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-9810","generatedAt":"2026-11-05T02:58:53.218Z","title":"Incorrect alias information in IonMonkey JIT compiler for Array.prototype.slice method may lead to missing bounds check and a buffer overflow.","description":"Incorrect alias information in IonMonkey JIT compiler for Array.prototype.slice method may lead to missing bounds check and a buffer overflow. This vulnerability affects Firefox < 66.0.1, Firefox ESR < 60.6.1, and Thunderbird < 60.6.1.","published":"2019-04-26T17:29:04.000Z","lastModified":"2026-06-17T02:44:39.000Z","status":"Modified","sourceIdentifier":"security@mozilla.org","cvss":{"version":"3.1","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"cwe":["CWE-119"],"affected":["mozilla/firefox","mozilla/thunderbird","redhat/enterprise linux","redhat/enterprise linux eus","redhat/enterprise linux server aus","redhat/enterprise linux server tus"],"epss":{"score":0.27207,"percentile":0.98057,"date":"2026-11-03","history":[{"date":"2026-10-22","score":0.27207,"percentile":0.98054}]},"kev":{"listed":false},"exploits":{"count":2,"verified":false,"firstPublished":"2019-03-26","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":47752,"kind":"exploit","title":"Mozilla FireFox (Windows 10 x64) - Full Chain Client Side Attack","url":"https://www.exploit-db.com/exploits/47752","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows_x86-64/local/47752.js","file":"exploits/windows_x86-64/local/47752.js","published":"2019-12-07","added":"2019-12-09","updated":"2019-12-09","author":"Axel Souchet","type":"local","platform":"windows_x86-64","port":null,"verified":false,"codes":["CVE-2019-9810","CVE-2019-11708"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"https://github.com/0vercl0k/CVE-2019-11708/tree/1cdf26140f17de8a620e90f4f6ea3865e18e49ad"},{"edbId":46605,"kind":"exploit","title":"Firefox < 66.0.1 - 'Array.prototype.slice' Buffer Overflow","url":"https://www.exploit-db.com/exploits/46605","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/multiple/dos/46605.html","file":"exploits/multiple/dos/46605.html","published":"2019-03-26","added":"2019-03-26","updated":"2019-03-26","author":"xuechiyaobai","type":"dos","platform":"multiple","port":null,"verified":false,"codes":["CVE-2019-9810"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null}]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 27.2%, higher than 98% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://packetstormsecurity.com/files/155592/Mozilla-Firefox-Windows-64-Bit-Chain-Exploit.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"security@mozilla.org"},{"url":"https://access.redhat.com/errata/RHSA-2019:0966","tags":["Third Party Advisory"],"source":"security@mozilla.org"},{"url":"https://access.redhat.com/errata/RHSA-2019:1144","tags":["Third Party Advisory"],"source":"security@mozilla.org"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1537924","tags":["Exploit","Issue Tracking","Vendor Advisory"],"source":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2019-09/","tags":["Vendor Advisory"],"source":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2019-10/","tags":["Vendor Advisory"],"source":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2019-12/","tags":["Vendor Advisory"],"source":"security@mozilla.org"},{"url":"http://packetstormsecurity.com/files/155592/Mozilla-Firefox-Windows-64-Bit-Chain-Exploit.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2019:0966","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2019:1144","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1537924","tags":["Exploit","Issue Tracking","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.mozilla.org/security/advisories/mfsa2019-09/","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.mozilla.org/security/advisories/mfsa2019-10/","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.mozilla.org/security/advisories/mfsa2019-12/","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-9810","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}