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Mozilla has successfully identified and patched 423 latent security vulnerabilities in Firefox using advanced artificial intelligence models, notably Claude Mythos Preview. Two weeks after initially announcing their AI-assisted security initiative, Fir…
Over the past several months, Mozilla ran an agentic harness powered by Claude Mythos Preview across Firefox’s source code, identifying 271 security bugs that were fixed in Firefox 150, with additional fixes shipped in versions 149.0.2 and 150.0….
That’s a lot. No, it’s an extraordinary number:
Since February, the Firefox team has been working around the clock using frontier AI models to find and fix latent security vulnerabilities in the browser. We wrote previously about our collaboration with Anthropic to scan Firefox with Opus 4.6, which led to fixes for 22 security-sensitive bugs in Firefox 148.
As part of our continued collaboration with Anthropic, we had the opportunity to apply an early version of Claude Mythos Preview to Firefox. This week’s release of Firefox 150 includes fixes for 271 vulnerabilities identified during this initial evaluation…
The browser refreshes resolve critical and high-severity vulnerabilities that could lead to arbitrary code execution.
The post Chrome 147, Firefox 150 Security Updates Rolling Out appeared first on SecurityWeek.
CVE-2026-6770 let attackers fingerprint Firefox and Tor users, even in Private mode. Firefox 150 and Tor Browser 15.0.10 fixed it. A vulnerability, tracked as CVE-2026-6770, allowed attackers to fingerprint Firefox users, even in Private Browsing, and also impacted the Tor Browser. The flaw worked even when Tor’s New Identity feature was used, bypassing protections meant […]
The vulnerability is tracked as CVE-2026-6770 and it has been patched with the release of Firefox 150 and Tor 15.0.10.
The post Firefox Vulnerability Allows Tor User Fingerprinting appeared first on SecurityWeek.
Mozilla has released Firefox 150, addressing a staggering 271 zero-day vulnerabilities. The security team identified these latent flaws using Anthropic’s early-stage Claude Mythos Preview AI model. This massive cleanup represents a major shift in…
Mozilla has released Firefox 150 to patch 41 security vulnerabilities, including multiple high-severity flaws that could lead to remote code execution. Users should immediately update their browsers to protect against these critical memory corruption a…
All the flaws could have also been found by an elite human researcher, according to Mozilla.
The post Claude Mythos Finds 271 Firefox Vulnerabilities appeared first on SecurityWeek.
Mozilla released Firefox 149.0 to the Release channel, bringing a significant set of privacy and security enhancements to the browser. The standout feature of this update is the integration of a free, built-in VPN designed to protect users on public ne…