Pale Moon 12.3

Pale Moon is a custom-built and optimized Firefox-based browser for Windows operating systems with current, high performance processors. It looks identical to the standard Firefox browser and supports Firefox extensions, themes and identities.


  • Highly optimized for modern processors
  • 100% Firefox sourced: As safe as the browser that has seen years of development.
  • Uses slightly less memory because of disabled redundant and optional code
  • Significant speed increases for page drawing and script processing
  • Stability: experience fewer browser crashes.
  • Support for SVG and Canvas, and downloadable fonts including WOFF
  • Support for HTML5 and WebGL (v4+)
  • Support for Firefox extensions (add-ons), themes and personas
  • Support for OOPP (Out-of-process plugin execution)
  • Able to use existing Firefox bookmarks and settings with this migration tool

Pale Moon 12.3 is a maintenance update to address a number of security and stability issues.

Most important changes:

  • Use-after-free while replacing/inserting a node in a document
  • Content Security Policy inline-script bypass
  • A few additional memory safety hazards and crashes that could theoretically be exploited

Additional note: the initial binaries as-published had a missing component that caused saving of a session to malfunction and not properly restore. If you have downloaded 12.3 between 12:00 and 17:00 Central European Summer Time (Z+2) on 17/7/2012, you may have a faulty browser and you should download and re-install the browser. Apologies for the inconvenience!

Download: Pale Moon 12.3 | 12.7 MB (Freeware)
Download: Portable Pale Moon 12.3 | 14.5 MB
Download: Pale Moon 12.3 x64 | 14.0 MB
View: Homepage

Report a problem with article
Previous Story


Next Story

PDF-XChange Viewer 2.5.204

2 Comments - Add comment