Zen Browser has officially launched version 1.17.13b, introducing a suite of security enhancements and significant feature upgrades. This update primarily targets high-impact vulnerabilities, implementing crucial patches for issues such as CVE-2025-14321 and CVE-2025-14322. The former addresses a use-after-free bug in WebRTC Signaling, while the latter mitigates a sandbox escape vulnerability found in the Graphics CanvasWebGL component. Beyond these specific fixes, the developers have also fortified the browser against various security risks, including JIT miscompilations, potential privilege escalation, and same-origin policy bypasses.
In addition to these critical security updates, Zen Browser 1.17.13b incorporates several noteworthy features. Notably, users operating on Linux with Wayland can now benefit from support for fractional scaled displays, enhancing visual rendering in applicable scenarios. MacOS users will appreciate the introduction of a dedicated GPU process, which enhances stability by isolating graphics-related tasks; this ensures that graphical errors do not lead to complete browser crashes, allowing for smoother recovery instead.
Moreover, the core engine of Zen Browser has been updated to align with Firefox version 146.0, which brings minor performance improvements and additional bug fixes for a more seamless browsing experience. Users can also enjoy expanded theme customization options, including monochrome themes and the ability to refine the color algorithm used in the theme picker, allowing for greater personalization of the browser's appearance.
This release marks a significant step forward for Zen Browser, emphasizing both security and user experience improvements. As technology continues to evolve, keeping software up-to-date is crucial for maintaining security and functionality, and this update reflects Zen Browser's commitment to those principles.
Release Information:
- Zen Browser 1.17.13b
- Release Date: December 11, 2025
- Stable Build: 1.17.13b (2025-12-11) ยท zen-browser/deskto
In addition to these critical security updates, Zen Browser 1.17.13b incorporates several noteworthy features. Notably, users operating on Linux with Wayland can now benefit from support for fractional scaled displays, enhancing visual rendering in applicable scenarios. MacOS users will appreciate the introduction of a dedicated GPU process, which enhances stability by isolating graphics-related tasks; this ensures that graphical errors do not lead to complete browser crashes, allowing for smoother recovery instead.
Moreover, the core engine of Zen Browser has been updated to align with Firefox version 146.0, which brings minor performance improvements and additional bug fixes for a more seamless browsing experience. Users can also enjoy expanded theme customization options, including monochrome themes and the ability to refine the color algorithm used in the theme picker, allowing for greater personalization of the browser's appearance.
This release marks a significant step forward for Zen Browser, emphasizing both security and user experience improvements. As technology continues to evolve, keeping software up-to-date is crucial for maintaining security and functionality, and this update reflects Zen Browser's commitment to those principles.
Release Information:
- Zen Browser 1.17.13b
- Release Date: December 11, 2025
- Stable Build: 1.17.13b (2025-12-11) ยท zen-browser/deskto
Zen Browser 1.17.13b released
Zen Browser 1.17.13b has been released with several security updates and notable feature additions. The main focus of this release was on addressing high-impact bugs, including fixes for CVE-2025-14321 and CVE-2025-14322, which resolved use-after-free issues in WebRTC Signaling and sandbox escape problems in the Graphics CanvasWebGL part. Additionally, the developers plugged up other security holes, such as JIT miscompilations and same-origin policy bypasses. The update also brings feature additions like support for fractional scaled displays on Linux Wayland, a dedicated GPU process on MacOS, and improved theme customization options.
