CVSS 3.1
9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2010-3765
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.
Severity
- EPSS
- 83% chance of exploitation in the next 30 days; higher than 99% of CVEs (scores of 2026-10-31)
- CISA KEV
- listed 2025-10-06, due 2025-10-27
- CWE
- CWE-119
- Published
- Modified
- Record from
- the NVD, synced
Affected
- mozilla:firefox
- mozilla:seamonkey
- mozilla:thunderbird
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