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CVE-2025-6425
Published: Jun 24, 2025
Modified: Apr 13, 2026
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.
| Vendor | Product | Versions |
|---|---|---|
Mozilla | Firefox | unaffected 115.25 - <= 115.*unaffected 128.12 - <= 128.*unaffected 140 - <= * |
Mozilla | Thunderbird | unaffected 128.12 - <= 128.*unaffected 140 - <= * |
References
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