CVEvulnerability

CVE-2010-3765

9.8 CRITICAL Known exploited Published 2010-10-28 Modified 2026-06-16 Official page ↗

CISA Known Exploited Vulnerability

Mozilla Multiple Products Remote Code Execution Vulnerability — Mozilla Multiple Products

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.

Added to KEV
2025-10-06
Remediation due
2025-10-27
Ransomware use
Unknown
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.
Notes
https://www.mozilla.org/en-US/security/advisories/mfsa2010-73 ; https://nvd.nist.gov/vuln/detail/CVE-2010-3765
Status
Analyzed
Published
2010-10-28
Last modified
2026-06-16
Assigner
[email protected]
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
9.3 HIGH — AV:N/AC:M/Au:N/C:C/I:C/A:C
Weaknesses
CWE-119

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.

Affected configurations

• mozilla firefox 3.5 • mozilla firefox 3.5.1 • mozilla firefox 3.5.2 • mozilla firefox 3.5.3 • mozilla firefox 3.5.4 • mozilla firefox 3.5.5 • mozilla firefox 3.5.6 • mozilla firefox 3.5.7 • mozilla firefox 3.5.8 • mozilla firefox 3.5.9 • mozilla firefox 3.5.10 • mozilla firefox 3.5.11 • mozilla firefox 3.5.12 • mozilla firefox 3.5.13 • mozilla firefox 3.5.14 • mozilla firefox 3.6 • mozilla firefox 3.6.2 • mozilla firefox 3.6.3 • mozilla firefox 3.6.4 • mozilla firefox 3.6.6 • mozilla firefox 3.6.7 • mozilla firefox 3.6.8 • mozilla firefox 3.6.9 • mozilla firefox 3.6.10 • mozilla firefox 3.6.11 • mozilla thunderbird 3.0.1 • mozilla thunderbird 3.0.2 • mozilla thunderbird 3.0.3 • mozilla thunderbird 3.0.4 • mozilla thunderbird 3.0.5 • mozilla thunderbird 3.0.6 • mozilla thunderbird 3.0.7 • mozilla thunderbird 3.0.8 • mozilla thunderbird 3.0.9 • mozilla thunderbird 3.1.1 • mozilla thunderbird 3.1.2 • mozilla thunderbird 3.1.3 • mozilla thunderbird 3.1.4 • mozilla thunderbird 3.1.5 • mozilla seamonkey 2.0 • mozilla seamonkey 2.0.1 • mozilla seamonkey 2.0.2 • mozilla seamonkey 2.0.3 • mozilla seamonkey 2.0.4 • mozilla seamonkey 2.0.5 • mozilla seamonkey 2.0.6 • mozilla seamonkey 2.0.7 • mozilla seamonkey 2.0.8 • mozilla seamonkey 2.0.9

Related

Weakness · CWE (1)

  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer weakness

References