CVE-2020-14049

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2020-06-22 · updated 2026-06-17
Weakness: CWE-88

Description

Viber for Windows up to 13.2.0.39 does not properly quote its custom URI handler. A malicious website could launch Viber with arbitrary parameters, forcing a victim to send an NTLM authentication request, and either relay the request or capture the hash for offline password cracking. NOTE: this issue exists because of an incomplete fix for CVE-2019-12569.

Affected products

Rakuten Viber: before 13.2.0.39 — fixed in 13.2.0.39

How to fix

Upgrade to a fixed version: Rakuten Viber 13.2.0.39. Check the vendor advisory for mitigations.

References

https://jeffs.sh/CVEs/CVE-2020-14049.txt
https://www.viber.com/en/security/
https://jeffs.sh/CVEs/CVE-2020-14049.txt
https://www.viber.com/en/security/

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