Live › vulnerability › CVE-2010-3765
Go to dashboardMozilla Firefox, SeaMonkey and Thunderbird have a memory corruption bug in the layout code (nsCSSFrameConstructor::ContentAppended) that is triggered by JavaScript that appends DOM nodes. A remote attacker who gets a user to load a crafted page can run arbitrary code as that user.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 5h before NVD. All times on this page are UTC.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| Mozilla Multiple Products | vendor | – | – |
| mozilla firefox | vendor | = 3.5 | – |
| mozilla firefox | vendor | = 3.5.1 | – |
| mozilla firefox | vendor | = 3.5.2 | – |
| mozilla firefox | vendor | = 3.5.3 | – |
| mozilla firefox | vendor |
| = 3.5.4 |
| – |
| mozilla firefox | vendor | = 3.5.5 | – |
| mozilla firefox | vendor | = 3.5.6 | – |
| mozilla firefox | vendor | = 3.5.7 | – |
| mozilla firefox | vendor | = 3.5.8 | – |
| mozilla firefox | vendor | = 3.5.9 | – |
| mozilla firefox | vendor | = 3.5.10 | – |
| mozilla firefox | vendor | = 3.5.11 | – |
| mozilla firefox | vendor | = 3.5.12 | – |
| mozilla firefox | vendor | = 3.5.13 | – |
| mozilla firefox | vendor | = 3.5.14 | – |
| mozilla firefox | vendor | = 3.6 | – |
| mozilla firefox | vendor | = 3.6.2 | – |
| mozilla firefox | vendor | = 3.6.3 | – |
| mozilla firefox | vendor | = 3.6.4 | – |
| mozilla firefox | vendor | = 3.6.6 | – |
| mozilla firefox | vendor | = 3.6.7 | – |
| mozilla firefox | vendor | = 3.6.8 | – |
| mozilla firefox | vendor | = 3.6.9 | – |
| mozilla firefox | vendor | = 3.6.10 | – |
| mozilla firefox | vendor | = 3.6.11 | – |
| mozilla thunderbird | vendor | = 3.0.1 | – |
| mozilla thunderbird | vendor | = 3.0.2 | – |
| mozilla thunderbird | vendor | = 3.0.3 | – |
| mozilla thunderbird | vendor | = 3.0.4 | – |
| mozilla thunderbird | vendor | = 3.0.5 | – |
| mozilla thunderbird | vendor | = 3.0.6 | – |
| mozilla thunderbird | vendor | = 3.0.7 | – |
| mozilla thunderbird | vendor | = 3.0.8 | – |
| mozilla thunderbird | vendor | = 3.0.9 | – |
| mozilla thunderbird | vendor | = 3.1.1 | – |
| mozilla thunderbird | vendor | = 3.1.2 | – |
| mozilla thunderbird | vendor | = 3.1.3 | – |
| mozilla thunderbird | vendor | = 3.1.4 | – |
| mozilla thunderbird | vendor | = 3.1.5 | – |
| mozilla seamonkey | vendor | = 2.0 | – |
Check the installed Firefox, SeaMonkey or Thunderbird version against the vendor's fixed release.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
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.
CISA 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.
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