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CVE-2010-3765

Published: Oct 27, 2010Updated: Apr 22, 2026 Sources: CVE List NVDCWE-119
9.8CRITICAL
NVD MITRE
EPSS Score
83.3%
Top 0.3%
CISA KEV
Active Exploitation
Since Oct 6, 2025
Exploits
3 Known
Remediation
Patch Available
Self-Check
OpenVAS

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-119

Affected Products

mozilla
oss-project·USaka mozilla corp.
firefoxOn-premDesktop App
Consumer Software / browser
thunderbirdOn-premDesktop App
Communications / email-server-client
seamonkeyDesktop App
Consumer Software / browser
and 1 more affected products View all →

Exploitability

CISA Known Exploited Vulnerability
Added to KEV:Oct 6, 2025
Remediation due:Oct 27, 2025

Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

3 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

http://blog.mozilla.com/security/2010/10/26/critical-vulnerability-in-firefox-3-5-and-firefox-3-6/
blog.mozilla.com
http://blogs.sun.com/security/entry/multiple_vulnerabilities_in_mozilla_firefox
blogs.sun.com
http://isc.sans.edu/diary.html?storyid=9817
isc.sans.edu
and 49 more references View all →

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