{"id":"CVE-2011-2998","url":"https://www.cyber-defence.io/tools/cve/CVE-2011-2998","generatedAt":"2026-10-27T22:04:30.186Z","title":"Integer underflow in Mozilla Firefox 3.6.x before 3.6.23 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via JavaScript code containing a large RegExp expression.","description":"Integer underflow in Mozilla Firefox 3.6.x before 3.6.23 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via JavaScript code containing a large RegExp expression.","published":"2011-09-30T10:55:04.000Z","lastModified":"2026-06-16T23:32:24.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"2.0","score":10,"severity":"HIGH","vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C"},"cwe":["CWE-189"],"affected":["mozilla/firefox"],"epss":{"score":0.05368,"percentile":0.92597,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (5.37%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://lists.opensuse.org/opensuse-security-announce/2011-11/msg00020.html","source":"cve@mitre.org"},{"url":"http://www.debian.org/security/2011/dsa-2312","source":"cve@mitre.org"},{"url":"http://www.debian.org/security/2011/dsa-2313","source":"cve@mitre.org"},{"url":"http://www.debian.org/security/2011/dsa-2317","source":"cve@mitre.org"},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2011:139","source":"cve@mitre.org"},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2011:140","source":"cve@mitre.org"},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2011:141","source":"cve@mitre.org"},{"url":"http://www.mozilla.org/security/announce/2011/mfsa2011-37.html","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://www.redhat.com/support/errata/RHSA-2011-1341.html","source":"cve@mitre.org"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=684815","source":"cve@mitre.org"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14012","source":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2011-11/msg00020.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.debian.org/security/2011/dsa-2312","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.debian.org/security/2011/dsa-2313","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.debian.org/security/2011/dsa-2317","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2011:139","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2011:140","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2011:141","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.mozilla.org/security/announce/2011/mfsa2011-37.html","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.redhat.com/support/errata/RHSA-2011-1341.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=684815","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14012","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2011-2998","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."}