Security Advisory

CVE-2025-6425

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2025-06-24 12:27:59

Last updated 2026-04-13 14:26:06

Assigner mozilla

State PUBLISHED

Description

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 was fixed in Firefox 140, Firefox ESR 115.25, Firefox ESR 128.12, Thunderbird 140, and Thunderbird 128.12.

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