CVE-2025-6425 (GCVE-0-2025-6425)
Vulnerability from cvelistv5
Published
2025-06-24 12:27
Modified
2026-04-13 14:26
Summary
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.
Impacted products
Vendor Product Version
Mozilla Firefox Unaffected: 115.25
Unaffected: 128.12
Unaffected: 140
Create a notification for this product.
   Mozilla Thunderbird Unaffected: 128.12
Unaffected: 140
Create a notification for this product.
Show details on NVD website


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.


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