CVE-2025-6425
published 2025-06-24CVE-2025-6425: An attacker who enumerated resources from the WebCompat extension could have obtained a persistent UUID that identified the browser, and persisted between…
medium4.3CVSS 3.1
AVNACLPRNUIRSUCLINAN
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.
Affected
11 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | firefox | < firefox 140.0-1 (sid) | firefox 140.0-1 (sid) |
| debian | firefox-esr | < firefox 140.0-1 (sid) | firefox 140.0-1 (sid) |
| debian | thunderbird | < firefox 140.0-1 (sid) | firefox 140.0-1 (sid) |
| mozilla | firefox | < 115.25.0 | 115.25.0 |
| mozilla | firefox | < 140.0 | 140.0 |
| mozilla | firefox | — | — |
| mozilla | firefox | >= 116.0 < 128.12.0 | 128.12.0 |
| mozilla | thunderbird | >= 0 < 1:128.12.0esr-1~deb11u1 | 1:128.12.0esr-1~deb11u1 |
| mozilla | thunderbird | >= 0 < 1:128.12.0esr-1~deb12u1 | 1:128.12.0esr-1~deb12u1 |
| mozilla | thunderbird | >= 0 < 1:128.12.0esr-1 | 1:128.12.0esr-1 |
| mozilla | thunderbird | >= 0 < 1:128.12.0esr-1 | 1:128.12.0esr-1 |
CVSS provenance
nvdv3.14.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
osv4.3MEDIUM