Firefox 134 finally gets Windows hardware H.265 support, improves popup blocking, and more

Firefox 134 finally gets Windows hardware H.265 support, improves popup blocking, and more

Home » News » Firefox 134 finally gets Windows hardware H.265 support, improves popup blocking, and more
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Mozilla has launched the most recent steady model of Firefox right now, 134.0. In case you recall, the beta 2 model of this replace tried to sneak in a solution to make itself the default browser.

With this new steady launch, Firefox has lastly gained help for hardware-accelerated playback of HEVC (excessive effectivity video codec) or H.265 on Home windows. For reference, Google Chrome obtained help for H.265 decoding again in 2022 again when Mozilla was pushing again in opposition to it.

One other change is a refreshed New Tab structure (picture under), in addition to enhancements to the browser’s pop-up blocker as they need to not be as overly aggressive.

The complete changelog is given under:

New

  • Firefox now helps touchpad maintain gestures on Linux. Which means kinetic (momentum) scrolling can now be interrupted by inserting two fingers on the touchpad.

  • {Hardware}-accelerated playback of HEVC video content material is now supported on Home windows.

  • Ecosia’s availability has been expanded to all languages within the German area together with Austria, Belgium, Italy, Netherlands, Spain, Sweden and Switzerland.

Modified

  • Firefox now follows the mannequin HTML specification for transient person activation extra carefully. This modification makes popup blocking much less strict in instances the place earlier variations of Firefox had been overly aggressive, lowering inaccurate blocking prompts.
  • A refreshed New Tab structure is being rolled out to customers within the US and Canada, that includes a repositioned emblem and climate widget to prioritize Net Search, Shortcuts, and Advisable Tales on the prime. The replace consists of modifications to the cardboard UI for advisable tales and permits customers with bigger screens to see as much as 4 columns, making higher use of house.

A number of safety fixes have additionally landed with this new model. They’re:

  • CVE-2025-0244: Tackle bar spoofing utilizing an invalid protocol scheme on Firefox for Android

  • CVE-2025-0245: Lock display screen setting bypass in Firefox Focus for Android

  • CVE-2025-0246: Tackle bar spoofing utilizing an invalid protocol scheme on Firefox for Android

  • CVE-2025-0237: WebChannel APIs prone to confused deputy assault

  • CVE-2025-0238: Use-after-free when breaking strains in textual content

  • CVE-2025-0239: Alt-Svc ALPN validation failure when redirected

  • CVE-2025-0240: Compartment mismatch when parsing JavaScript JSON module

  • CVE-2025-0241: Reminiscence corruption when utilizing JavaScript Textual content Segmentation

  • CVE-2025-0242: Reminiscence security bugs mounted in Firefox 134, Thunderbird 134, Firefox ESR 115.19, Firefox ESR 128.6, Thunderbird 115.19, and Thunderbird 128.6

  • CVE-2025-0243: Reminiscence security bugs mounted in Firefox 134, Thunderbird 134, Firefox ESR 128.6, and Thunderbird 128.6

  • CVE-2025-0247: Reminiscence security bugs mounted in Firefox 134 and Thunderbird 134

You may obtain the Firefox model 134.0 from the Neowin software program tales web page or from Mozilla’s official web site.

author avatar
roosho Senior Engineer (Technical Services)
I am Rakib Raihan RooSho, Jack of all IT Trades. You got it right. Good for nothing. I try a lot of things and fail more than that. That's how I learn. Whenever I succeed, I note that in my cookbook. Eventually, that became my blog. 
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