Mozilla released an emergency fix for a critical Firefox vulnerability
Kyiv • UNN
Mozilla developers have discovered a dangerous vulnerability in Firefox that has already been exploited. The company has released a fix for versions 136.0.4, ESR 115.21.1 and 128.8.1.
At the time of its discovery, the dangerous vulnerability had already been exploited. Mozilla was forced to release an emergency fix for all versions of the Firefox browser.
UNN reports with reference to Europa Press and Mozilla.
The critical vulnerability works according to the same pattern as in the case of the problem in Chrome
Mozilla developers have discovered a dangerous vulnerability in the Firefox browser, which was designated as CVE-2025-2857. It is stated that it affects standard and ESR versions of Firefox.
The problem is part of a series of attacks aimed at browser isolation mechanisms. The mentioned flaw is similar to the vulnerability that recently affected Chrome, the company explains.
Important: Mozilla classifies the risk as "critical", which corresponds to the highest level of danger. An attacker can gain access to data on other parts of the computer.
It is currently known that the defect only affects Windows users, and according to the developers, Mac and Linux users are not at risk. The protected Tor browser, which is based on Firefox, is also "vulnerable".
The company confirmed that the developers reacted quickly by releasing a fix for Firefox 136.0.4 and ESR versions 115.21.1 and 128.8.1.
Update your browser right now!
Firefox users should upgrade to the new versions 136.0.4, Firefox ESR 115.21.1 or Firefox ESR 128.8.1 as soon as possible. Usually the update happens automatically.
In addition, you can actively download it via the "Help" > "About Firefox" menu. After installation, the browser must be restarted.
Google has developed a browser game based on the Squid Game series27.12.24, 16:25 • 102982 views
