CVE-2025-6425

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: An attacker who enumerated resources from the WebCompat extension could have obtained a persistent UUID that identified the browser and persisted between containers and...

CVE-2025-6425

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, Firefox ESR 128.12,...

CVE-2025-6425

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...

CVE-2025-6425

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, Firefox ESR 128.12,...

DEBIAN-CVE-2025-6425

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...

UBUNTU-CVE-2025-6425

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...

CVE-2025-6425

The WebCompat extension in Mozilla Firefox and Mozilla Thunderbird is vulnerable to an information disclosure flaw. An attacker who enumerates resources from the extension can obtain a persistent UUID that identifies the browser. This UUID persists between containers and normal/private browsing m...

CVE-2025-6425

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...

CVE-2025-6425 The WebCompat WebExtension shipped with Firefox exposed a persistent UUID

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...

CVE-2025-6425 The WebCompat WebExtension shipped with Firefox exposed a persistent UUID

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...

Mozilla Firefox ESR < 115.25

The version of Firefox ESR installed on the remote Windows host is prior to 115.25. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-52 advisory. - A use-after-free in FontFaceSet resulted in a potentially exploitable crash. CVE-2025-6424 - An attacker who...

Mozilla -- persistent UUID that identifies browser

[email protected] reports: 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 E...

PT-2025-26722

Name of the Vulnerable Software and Affected Versions: Firefox versions prior to 140 Firefox ESR versions prior to 115.25 Firefox ESR versions prior to 128.12 Description: An attacker who enumerated resources from the WebCompat extension could have obtained a persistent UUID that identified the...

CVE-2025-6425: Exposure of Sensitive Information to an Unauthorized Actor

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...

Firefox and Chrome reaching major versions 100 may break some websites

Mozilla has issued a warning about the upcoming versions 100 for both Chrome and Firefox. The change in the version number from 2 to 3 digits may cause some problems when visiting websites that are not prepared for this change. For example, it’s possible that some parsing libraries may have...