Is CVE-2009-2466 being actively exploited?

CVE-2009-2466 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2009-2466?

CVE-2009-2466 has a CVSS 2.0 base score of 10.0 (HIGH).

CVE-2009-2466

HIGH · CVSS 10.0EPSS 6.6%EU EUVD

The JavaScript engine in Mozilla Firefox before 3.0.12 and Thunderbird allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via vectors related to (1) nsDOMClassInfo.cpp, (2) JS_HashTableRawLookup, and (3) MirrorWrappedNativeParent and js_LockGCThingRT.

Key facts

CVSS score: 10.0 (v2.0)
Severity: HIGH
CVSS vector: AV:N/AC:L/Au:N/C:C/I:C/A:C
Weakness (CWE): CWE-787
EPSS score: 6.6% (94th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2009-2461)
Published: July 22, 2009
NVD last modified: June 16, 2026
Status: Analyzed

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2009-2461 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

mozilla / firefox
mozilla / thunderbird

References

http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00005.html(Broken Link)
http://lists.opensuse.org/opensuse-security-announce/2009-08/msg00002.html(Broken Link)
http://rhn.redhat.com/errata/RHSA-2009-1162.html(Third Party Advisory)
http://rhn.redhat.com/errata/RHSA-2009-1163.html(Third Party Advisory)
http://secunia.com/advisories/35914(Not Applicable, Vendor Advisory)
http://secunia.com/advisories/35943(Not Applicable, Vendor Advisory)
http://secunia.com/advisories/35944(Not Applicable, Patch, Vendor Advisory)
http://secunia.com/advisories/35947(Not Applicable, Vendor Advisory)
http://secunia.com/advisories/36005(Not Applicable)
http://secunia.com/advisories/36145(Not Applicable)
http://sunsolve.sun.com/search/document.do?assetkey=1-26-265068-1(Broken Link)
http://sunsolve.sun.com/search/document.do?assetkey=1-77-1020800.1-1(Broken Link)
http://www.mozilla.org/security/announce/2009/mfsa2009-34.html(Vendor Advisory)
http://www.redhat.com/support/errata/RHSA-2010-0153.html(Third Party Advisory)
http://www.redhat.com/support/errata/RHSA-2010-0154.html(Third Party Advisory)
http://www.securityfocus.com/bid/35758(Broken Link, Patch)
http://www.vupen.com/english/advisories/2009/1972(Broken Link, Vendor Advisory)
http://www.vupen.com/english/advisories/2009/2152(Broken Link)
http://www.vupen.com/english/advisories/2010/0650(Broken Link)
https://bugzilla.mozilla.org/show_bug.cgi?id=454704(Exploit, Issue Tracking, Vendor Advisory)
https://bugzilla.mozilla.org/show_bug.cgi?id=465980(Broken Link, Exploit)
https://bugzilla.mozilla.org/show_bug.cgi?id=493281(Issue Tracking, Patch, Vendor Advisory)
https://bugzilla.mozilla.org/show_bug.cgi?id=494445(Issue Tracking, Vendor Advisory)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9820(Broken Link)
https://www.redhat.com/archives/fedora-package-announce/2009-July/msg01032.html(Broken Link)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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