{"id":"CVE-2009-3979","url":"https://www.cyber-defence.io/tools/cve/CVE-2009-3979","generatedAt":"2026-10-27T21:42:32.335Z","title":"Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 3.0.16 and 3.5.x before 3.5.6, SeaMonkey before 2.0.1, and Thunderbird allow remote attackers to cause a denial of service (memory corruption and application crash) or…","description":"Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 3.0.16 and 3.5.x before 3.5.6, SeaMonkey before 2.0.1, and Thunderbird allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.","published":"2009-12-17T17:30:00.000Z","lastModified":"2026-06-16T23:12:45.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"2.0","score":9.3,"severity":"HIGH","vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C"},"cwe":[],"affected":["mozilla/firefox","mozilla/seamonkey"],"epss":{"score":0.03963,"percentile":0.90374,"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 (3.96%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://secunia.com/advisories/37699","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://secunia.com/advisories/37703","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://secunia.com/advisories/37704","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://secunia.com/advisories/37785","tags":["Vendor 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Advisory"],"source":"cve@mitre.org"},{"url":"http://www.novell.com/linux/security/advisories/2009_63_firefox.html","source":"cve@mitre.org"},{"url":"http://www.redhat.com/support/errata/RHSA-2010-0153.html","source":"cve@mitre.org"},{"url":"http://www.redhat.com/support/errata/RHSA-2010-0154.html","source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/37349","source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/37361","source":"cve@mitre.org"},{"url":"http://www.ubuntu.com/usn/USN-873-1","source":"cve@mitre.org"},{"url":"http://www.ubuntu.com/usn/USN-874-1","source":"cve@mitre.org"},{"url":"http://www.vupen.com/english/advisories/2009/3547","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://www.vupen.com/english/advisories/2010/0650","source":"cve@mitre.org"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=293347","source":"cve@mitre.org"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=457514","source":"cve@mitre.org"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=479931","source":"cve@mitre.org"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=494617","source":"cve@mitre.org"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=506267","source":"cve@mitre.org"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=515811","source":"cve@mitre.org"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=516237","source":"cve@mitre.org"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=522374","source":"cve@mitre.org"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=546694","source":"cve@mitre.org"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/54799","source":"cve@mitre.org"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10956","source":"cve@mitre.org"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8487","source":"cve@mitre.org"},{"url":"https://rhn.redhat.com/errata/RHSA-2009-1673.html","source":"cve@mitre.org"},{"url":"https://rhn.redhat.com/errata/RHSA-2009-1674.html","source":"cve@mitre.org"},{"url":"https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00995.html","source":"cve@mitre.org"},{"url":"https://www.redhat.com/archives/fedora-package-announce/2009-December/msg01034.html","source":"cve@mitre.org"},{"url":"https://www.redhat.com/archives/fedora-package-announce/2009-December/msg01041.html","source":"cve@mitre.org"},{"url":"http://secunia.com/advisories/37699","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/37703","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/37704","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/37785","tags":["Vendor 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Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vupen.com/english/advisories/2010/0650","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=293347","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=457514","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=479931","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2009-3979","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."}