CVE-2010-3765
CRITICALCISA KEVEPSS 100th pctlDescription
Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before 3.1.6 and 3.0.x before 3.0.10, and SeaMonkey 2.x before 2.0.10, when JavaScript is enabled, allows remote attackers to execute arbitrary code via vectors related to nsCSSFrameConstructor::ContentAppended, the appendChild method, incorrect index tracking, and the creation of multiple frames, which triggers memory corruption, as exploited in the wild in October 2010 by the Belmoo malware.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
Very high risk: more likely to be exploited than 100% of all known CVEs.
Mozilla Multiple Products Remote Code Execution Vulnerability
Mozilla Firefox, SeaMonkey, and Thunderbird contain an unspecified vulnerability when JavaScript is enabled. This allows remote attackers to execute arbitrary code via vectors related to nsCSSFrameConstructor::ContentAppended, the appendChild method, incorrect index tracking, and the creation of multiple frames, which triggers memory corruption.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Remediation due: 2025-10-27
References
- http://blog.mozilla.com/security/2010/10/26/critical-vulnerability-in-firefox-3-5-and-firefox-3-6/
- http://blogs.sun.com/security/entry/multiple_vulnerabilities_in_mozilla_firefox
- http://isc.sans.edu/diary.html?storyid=9817
- http://lists.fedoraproject.org/pipermail/package-announce/2010-November/050233.html
- http://lists.fedoraproject.org/pipermail/package-announce/2010-October/050061.html
- http://lists.fedoraproject.org/pipermail/package-announce/2010-October/050077.html
- http://lists.fedoraproject.org/pipermail/package-announce/2010-October/050154.html
- http://norman.com/about_norman/press_center/news_archive/2010/129223/en?utm_source=twitterfeed&utm_medium=twitter
- http://secunia.com/advisories/41761
- http://secunia.com/advisories/41965
- http://secunia.com/advisories/41966
- http://secunia.com/advisories/41969
- http://secunia.com/advisories/41975
- http://secunia.com/advisories/42003
- http://secunia.com/advisories/42008
- http://secunia.com/advisories/42043
- http://secunia.com/advisories/42867
- http://slackware.com/security/viewer.php?l=slackware-security&y=2010&m=slackware-security.556706
- http://support.avaya.com/css/P8/documents/100114329
- http://support.avaya.com/css/P8/documents/100114335
- http://www.debian.org/security/2010/dsa-2124
- http://www.exploit-db.com/exploits/15341
- http://www.exploit-db.com/exploits/15342
- http://www.exploit-db.com/exploits/15352
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:213
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:219
- http://www.mozilla.org/security/announce/2010/mfsa2010-73.html
- http://www.norman.com/about_norman/press_center/news_archive/2010/129223/
- http://www.norman.com/security_center/virus_description_archive/129146/
- http://www.redhat.com/support/errata/RHSA-2010-0808.html
- http://www.redhat.com/support/errata/RHSA-2010-0809.html
- http://www.redhat.com/support/errata/RHSA-2010-0810.html
- http://www.redhat.com/support/errata/RHSA-2010-0861.html
- http://www.redhat.com/support/errata/RHSA-2010-0896.html
- http://www.securityfocus.com/bid/44425
- http://www.securitytracker.com/id?1024645
- http://www.securitytracker.com/id?1024650
- http://www.securitytracker.com/id?1024651
- http://www.ubuntu.com/usn/USN-1011-2
- http://www.ubuntu.com/usn/USN-1011-3
- http://www.ubuntu.com/usn/usn-1011-1
- http://www.vupen.com/english/advisories/2010/2837
- http://www.vupen.com/english/advisories/2010/2857
- http://www.vupen.com/english/advisories/2010/2864
- http://www.vupen.com/english/advisories/2010/2871
- http://www.vupen.com/english/advisories/2011/0061
- https://bugzilla.mozilla.org/show_bug.cgi?id=607222
- https://bugzilla.mozilla.org/show_bug.cgi?id=607222#c53
- https://bugzilla.redhat.com/show_bug.cgi?id=646997
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12108
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Start freeThis product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-22.