Critical · published December 9, 2025
🔥 A sneaky JIT miscompilation in the JavaScript engine could give attackers a roundabout way into your system! Think of it like a chef who misreads a recipe, using salt instead of sugar — the dish might turn out in a way nobody expected! In this case, the code is being executed incorrectly, leading to unexpected behavior that could be exploited. An attacker could leverage this vulnerability to run arbitrary code, potentially compromising user systems or gaining unauthorized access. The consequences could be absolutely devastating, allowing an attacker to manipulate data or take control of a device without anyone noticing.
Think of it like a chef who misreads a recipe, using salt instead of sugar — the dish might turn out in a way nobody expected! In this case, the code is being executed incorrectly, leading to unexpected behavior that could be exploited. This vulnerability arises from a Just-In-Time (JIT) compilation error within the JavaScript Engine, allowing for possible exploitation through crafted scripts that take advantage of the miscompilation.
An attacker could leverage this vulnerability to run arbitrary code, potentially compromising user systems or gaining unauthorized access. The consequences could be absolutely devastating, allowing an attacker to manipulate data or take control of a device without anyone noticing. Update your Firefox or Thunderbird to the latest versions: Firefox 146, Firefox ESR 115.31, or Thunderbird 146 to mitigate this risk. Ensure auto-updates are enabled to keep your systems secure! You've got this! Patch those applications and keep your digital space safe! 🛡️
| Product | Versions | Fixed in |
|---|---|---|
| mozilla/firefox | < 115.31.0 | 115.31.0 |
| mozilla/firefox | < 146.0 | 146.0 |
| mozilla/firefox | ≥ 116.0, < 140.6.0 | 140.6.0 |
| mozilla/thunderbird | < 140.6.0 | 140.6.0 |
| mozilla/thunderbird | < 146.0 | 146.0 |