{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-4086","assignerOrgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","state":"PUBLISHED","assignerShortName":"mozilla","dateReserved":"2025-04-29T13:13:40.209Z","datePublished":"2025-04-29T13:13:40.899Z","dateUpdated":"2026-04-13T14:28:45.158Z"},"containers":{"cna":{"affected":[{"product":"Firefox","vendor":"Mozilla","versions":[{"status":"unaffected","version":"138","lessThanOrEqual":"*","versionType":"rpm"}]},{"product":"Thunderbird","vendor":"Mozilla","versions":[{"status":"unaffected","version":"138","lessThanOrEqual":"*","versionType":"rpm"}]}],"descriptions":[{"lang":"en","value":"A specially crafted filename containing a large number of encoded newline characters could obscure the file's extension when displayed in the download dialog.\n*This bug only affects Thunderbird for Android. Other versions of Thunderbird are unaffected.*. This vulnerability was fixed in Firefox 138 and Thunderbird 138.","supportingMedia":[{"type":"text/html","base64":false,"value":"A specially crafted filename containing a large number of encoded newline characters could obscure the file's extension when displayed in the download dialog.<br>*This bug only affects Thunderbird for Android. Other versions of Thunderbird are unaffected.*. This vulnerability was fixed in Firefox 138 and Thunderbird 138."}]}],"title":"Specially crafted filename could be used to obscure download type","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1945705"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-28/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-31/"}],"credits":[{"lang":"en","value":"Hafiizh"}],"providerMetadata":{"orgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","shortName":"mozilla","dateUpdated":"2026-04-13T14:28:45.158Z"}},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-451","lang":"en","description":"CWE-451 User Interface (UI) Misrepresentation of Critical Information"}]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":6.5,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","integrityImpact":"LOW","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"LOW"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-04-29T15:53:35.848720Z","id":"CVE-2025-4086","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":"2025-04-29T15:55:21.119Z"}}]}}