Bug 2374562 (CVE-2025-6425) - CVE-2025-6425 firefox: The WebCompat WebExtension shipped with Firefox exposed a persistent UUID
Summary: CVE-2025-6425 firefox: The WebCompat WebExtension shipped with Firefox expose...
Keywords:
Status: NEW
Alias: CVE-2025-6425
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-06-24 13:01 UTC by OSIDB Bzimport
Modified: 2025-06-24 19:44 UTC (History)
5 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2025-06-24 13:01:37 UTC 
An attacker who enumerated resources from the WebCompat extension could have obtained a persistent UUID that identified the browser, and persisted between containers and normal/private browsing mode, but not profiles. This vulnerability affects Firefox < 140, Firefox ESR < 115.25, and Firefox ESR < 128.12.
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