Exposed in Plain Sight: Critical Privacy Flaw Defeats Viber’s Anti-Censorship ‘Cloak’ Mode
ID: c05ca54d-e7a4-58c7-9cd4-6f07926defc0
STIX ID: report--c05ca54d-e7a4-58c7-9cd4-6f07926defc0
Feed Name: securityonline.info
Threat Score
Vulnerability: Rakuten Viber's "Cloak" proxy mode uses a static TLS ClientHello fingerprint (CVE-2025-13476), enabling Deep Packet Inspection systems to identify and block proxy/VPN traffic on Windows and Android; CERT/CC and Viber advise updating to patched versions (Windows V27.3.0.0+; Android V27.2.0.0g+) to restore proper proxy functionality.
Your team is not currently subscribed to this feed. You must subscribe to it in order to see this post.