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CVE-2016-9066 is a buffer-overflow vulnerability in Mozilla Firefox, Firefox ESR, and Thunderbird caused by memory-allocation issues while processing large volumes of incoming data. Malformed or excessively large attacker-controlled input can result in a potentially exploitable process crash. The affected versions are Firefox before 50, Firefox ESR before 45.5, and Thunderbird before 45.5.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository is a proof-of-concept exploit for CVE-2016-9066, a vulnerability in Mozilla Firefox's JavaScript engine. The exploit consists of a minimalistic Python asyncio-based web server (server.py) and exploit logic (poc.py) that serves a crafted HTML page (index.html) and JavaScript exploit (code.js) to the target browser. The server also delivers a large, specially crafted compressed payload (payload.js) to trigger a memory corruption bug in the browser. The JavaScript exploit (code.js) leverages the bug to achieve arbitrary read/write primitives and demonstrates code execution by overwriting function pointers, ultimately opening Calculator.app on macOS. The exploit requires the target to visit the attacker's web server with a vulnerable Firefox version. The repository is well-structured, with clear separation between server logic, payload construction, and browser-side exploitation. No fake or detection-only scripts are present; this is a functional proof-of-concept exploit.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
1 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
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.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.