CVE-2010-3765 is a memory corruption vulnerability in Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.0.x before 3.0.10 and 3.1.x before 3.1.6, and SeaMonkey 2.x before 2.0.10. When JavaScript is enabled, a remote attacker can trigger the flaw through web content that abuses DOM manipulation, specifically vectors involving appendChild, incorrect index tracking, and creation of multiple frames during processing in nsCSSFrameConstructor::ContentAppended. The resulting memory corruption can be leveraged for arbitrary code execution. The vulnerability was reported as exploited in the wild in October 2010 by the Belmoo malware.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (3 hidden).
This repository contains a single Metasploit module: 'mozilla_interleaved_write.rb', which exploits a memory corruption vulnerability (CVE-2010-3765) in Mozilla Firefox versions 3.6.8 to 3.6.11 on Windows XP and Windows Server 2003. The exploit works by serving a malicious HTML page with interleaved document.write and appendChild JavaScript calls, triggering the vulnerability when visited by a target user. The module acts as an HTTP server, delivering the exploit and a customizable Metasploit payload (such as a reverse shell) to the victim. The exploit is operational and can be used to achieve arbitrary code execution on affected systems. The repository is structured as a typical Metasploit module, written in Ruby, and includes embedded JavaScript and HTML for the browser-based attack. No hardcoded IPs or domains are present; the attack is delivered via the attacker's HTTP server.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
10 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.