CVE-2025-13476

9.8 criticalEPSS 0.4%

Critical (9.8) in rakuten viber. EPSS 0.4% chance of exploitation in the next 30 days.

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)

Severity

CVSS 3.1

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 30% of CVEs (scores of 2026-10-31)
CWE: CWE-327
Published: 2026-03-05
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

rakuten:viber

References

https://www.viber.com/en/download/
https://www.kb.cert.org/vuls/id/772695

Check your stack JSON