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CVE-2025-13476
Published: Mar 5, 2026
Modified: Mar 6, 2026
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)
| Vendor | Product | Versions |
|---|---|---|
Rakuten Viber | Rakuten Viber Cloak - Android | affected 25.7.2.0g - < 27.2.0.0g |
Rakuten Viber | Rakuten Viber Cloak - Windows | affected v25.6.0.0 - < v27.3.0.0 |
References
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