Security Advisory

CVE-2025-13476

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-03-05 16:53:32

Last updated 2026-03-06 10:36:09

Assigner certcc

CVSS score not scored

State PUBLISHED

Description

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)

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