{"id":"CVE-2025-13476","details":"Rakuten Viber Cloak mode in Android v25.7.2.0g and Windows v25.6.0.0–v25.8.1.0 uses a static and predictable TLS ClientHello fingerprint lacking extension diversity, allowing Deep Packet Inspection (DPI) systems to trivially identify and block proxy traffic, undermining censorship circumvention. (CWE-327)","modified":"2026-03-14T01:51:35.502559Z","published":"2026-03-05T19:15:58.283Z","references":[{"type":"WEB","url":"https://www.viber.com/en/download/"},{"type":"ADVISORY","url":"https://www.kb.cert.org/vuls/id/772695"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"25.6.0"},{"last_affected":"25.8.1.0"}]},{"events":[{"introduced":"0"},{"last_affected":"9.3.0.6-25\\.7\\.2\\.0g"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-13476.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}