{"id":"CVE-2025-55028","aliases":["EUVD-2025-25226","GHSA-h3xr-99q8-227g"],"status":"published","title":"JavaScript alerts could impede UI interaction or allow denial of service attacks","description":"Malicious scripts utilizing repetitive JavaScript alerts could prevent client user interaction in some scenarios and allow for denial of service attacks. This vulnerability was fixed in Firefox for iOS 142.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-09","score":0.00235,"percentile":0.14586,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-400"],"published":"2025-08-19T20:52:49Z","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=1850240","tags":["Issue Tracking","Permissions Required"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-68/","tags":["Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-55028"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-68"},{"url":"https://github.com/advisories/GHSA-h3xr-99q8-227g"}],"sources":{"cve":[{"id":"CVE-2025-55028","title":"JavaScript alerts could impede UI interaction or allow denial of service attacks","description":"Malicious scripts utilizing repetitive JavaScript alerts could prevent client user interaction in some scenarios and allow for denial of service attacks. This vulnerability was fixed in Firefox for iOS 142.","status":"published","published":"2025-08-19T20:52:49.372Z","modified":"2026-04-13T14:31:51.918Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"adp"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:32:52.839698Z"}],"euvd":[{"id":"EUVD-2025-25226","description":"Malicious scripts utilizing repetitive JavaScript alerts could prevent client user interaction in some scenarios and allow for denial of service attacks. This vulnerability was fixed in Firefox for iOS 142.","status":"published","published":"2025-08-19T20:52:49Z","modified":"2026-04-13T14:31:51Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T19:24:27.958964Z"}],"ghsa":[{"id":"GHSA-h3xr-99q8-227g","title":"Malicious scripts utilizing repetitive JavaScript alerts could prevent client user interaction in...","description":"Malicious scripts utilizing repetitive JavaScript alerts could prevent client user interaction in some scenarios and allow for denial of service attacks This vulnerability affects Firefox for iOS \u003c 142.","status":"published","published":"2025-08-19T21:30:37Z","modified":"2025-08-20T18:30:20Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:03:21.511205Z"}],"nvd":[{"id":"CVE-2025-55028","description":"Malicious scripts utilizing repetitive JavaScript alerts could prevent client user interaction in some scenarios and allow for denial of service attacks. This vulnerability was fixed in Firefox for iOS 142.","status":"published","published":"2025-08-19T21:15:27.973Z","modified":"2026-10-05T15:10:00.59Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:11:24.730342Z"}]}}