{"id":"CVE-2025-54143","aliases":["EUVD-2025-25230","GHSA-x7hr-j7rg-h68w","UBUNTU-CVE-2025-54143"],"status":"published","title":"Sandboxed iframes could allow local downloads despite sandbox restrictions","description":"Sandboxed iframes on webpages could potentially allow downloads to the device, bypassing the expected sandbox restrictions declared on the parent page. This vulnerability was fixed in Firefox for iOS 141.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.0051,"percentile":0.43999,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-693"],"published":"2025-07-23T00:00:00Z","modified":"2026-10-05T15:10:00Z","products":[{"vendor":"mozilla","product":"firefox"},{"vendor":"mozilla","product":"firefox for ios"}],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1912671","tags":["Issue Tracking","Permissions Required"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-60/","tags":["Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-54143"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-60"},{"url":"https://github.com/advisories/GHSA-x7hr-j7rg-h68w"},{"url":"https://ubuntu.com/security/CVE-2025-54143","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-54143","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2025-54143","title":"Sandboxed iframes could allow local downloads despite sandbox restrictions","description":"Sandboxed iframes on webpages could potentially allow downloads to the device, bypassing the expected sandbox restrictions declared on the parent page. This vulnerability was fixed in Firefox for iOS 141.","status":"published","published":"2025-08-19T20:52:47.45Z","modified":"2026-04-13T14:30:52.883Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp"}],"cwes":["CWE-693"],"updated_at":"2026-11-02T14:32:27.603809Z"}],"euvd":[{"id":"EUVD-2025-25230","description":"Sandboxed iframes on webpages could potentially allow downloads to the device, bypassing the expected sandbox restrictions declared on the parent page. This vulnerability was fixed in Firefox for iOS 141.","status":"published","published":"2025-08-19T20:52:47Z","modified":"2026-04-13T14:30:52Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T19:24:28.399811Z"}],"ghsa":[{"id":"GHSA-x7hr-j7rg-h68w","title":"Sandboxed iframes on webpages could potentially allow downloads to the device, bypassing the...","description":"Sandboxed iframes on webpages could potentially allow downloads to the device, bypassing the expected sandbox restrictions declared on the parent page This vulnerability affects Firefox for iOS \u003c 141.","status":"published","published":"2025-08-19T21:30:37Z","modified":"2025-08-20T18:30:20Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-693"],"updated_at":"2026-11-02T15:03:21.511205Z"}],"nvd":[{"id":"CVE-2025-54143","description":"Sandboxed iframes on webpages could potentially allow downloads to the device, bypassing the expected sandbox restrictions declared on the parent page. This vulnerability was fixed in Firefox for iOS 141.","status":"published","published":"2025-08-19T21:15:27.557Z","modified":"2026-10-05T15:10:00.59Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-693"],"updated_at":"2026-11-02T14:11:24.730342Z"}],"osv":[{"id":"UBUNTU-CVE-2025-54143","description":"Sandboxed iframes on webpages could potentially allow downloads to the device, bypassing the expected sandbox restrictions declared on the parent page. This vulnerability affects Firefox for iOS \u003c 141.","status":"withdrawn","published":"2025-07-23T00:00:00Z","modified":"2025-07-24T07:02:20.696532Z","updated_at":"2026-11-02T16:55:50.31802Z"}]}}