{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-6425","assignerOrgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","state":"PUBLISHED","assignerShortName":"mozilla","dateReserved":"2025-06-20T14:51:28.050Z","datePublished":"2025-06-24T12:27:59.987Z","dateUpdated":"2026-04-13T14:26:06.659Z"},"containers":{"cna":{"affected":[{"product":"Firefox","vendor":"Mozilla","versions":[{"status":"unaffected","version":"115.25","lessThanOrEqual":"115.*","versionType":"rpm"},{"status":"unaffected","version":"128.12","lessThanOrEqual":"128.*","versionType":"rpm"},{"status":"unaffected","version":"140","lessThanOrEqual":"*","versionType":"rpm"}]},{"product":"Thunderbird","vendor":"Mozilla","versions":[{"status":"unaffected","version":"128.12","lessThanOrEqual":"128.*","versionType":"rpm"},{"status":"unaffected","version":"140","lessThanOrEqual":"*","versionType":"rpm"}]}],"descriptions":[{"lang":"en","value":"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.","supportingMedia":[{"type":"text/html","base64":false,"value":"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."}]}],"title":"The WebCompat WebExtension shipped with Firefox exposed a persistent UUID","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1717672"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-51/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-52/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-53/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-54/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-55/"}],"credits":[{"lang":"en","value":"Rob Wu"}],"providerMetadata":{"orgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","shortName":"mozilla","dateUpdated":"2026-04-13T14:26:06.659Z"}},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-200","lang":"en","description":"CWE-200 Exposure of Sensitive Information to an Unauthorized Actor"}]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":4.3,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","integrityImpact":"NONE","userInteraction":"REQUIRED","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"LOW"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-06-25T14:21:41.910497Z","id":"CVE-2025-6425","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-06-25T14:30:48.734Z"}},{"title":"CVE Program Container","references":[{"url":"https://lists.debian.org/debian-lts-announce/2025/07/msg00002.html"},{"url":"https://lists.debian.org/debian-lts-announce/2025/06/msg00029.html"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2025-11-03T20:07:00.354Z"}}]}}