CVE-2025-13476

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...

CVE-2025-13476

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...

CVE-2025-13476

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...

CVE-2025-13476

Rakuten Viber's Cloak mode is vulnerable to identification by Deep Packet Inspection (DPI) systems due to a flawed TLS handshake implementation. Specifically, the application uses a static and predictable TLS ClientHello fingerprint that lacks extension diversity in Android v25.7.2.0g and Windows...

PT-2026-23467

Name of the Vulnerable Software and Affected Versions Rakuten Viber versions 25.6.0.0 through 25.8.1.0 Description Rakuten Viber’s Cloak mode on Android version 25.7.2.0g and Windows versions 25.6.0.0 through 25.8.1.0 employs a consistent TLS ClientHello fingerprint that lacks extension diversity...

Rakuten Viber Desktop 安全漏洞

Rakuten Viber Desktop is a messaging application developed by Luxembourg-based Viber Inc. There is a security vulnerability in Rakuten Viber Desktop, which stems from the use of a static and predictable TLS ClientHello fingerprint. This vulnerability may lead to the identification and prevention ...