Viber for Windows up to 13.2.0.39 does not properly quote its custom URI handler.
Priority LOW 37CWE-88Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-88.
Summary
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.
Why it matters now
EPSS 0.02216 82nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:rakuten:viber:*:*:*:*:*:windows:*:* | before 13.2.0.39 | Vulnerable | Rakuten Mobile, Inc. |
- cpe:2.3:a:rakuten:viber:*:*:*:*:*:windows:*:* Versions before 13.2.0.39 Vulnerable ·Rakuten Mobile, Inc.
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-14049
- 2026-10-03 Alias added: GHSA-r3v6-qx45-r3j8
References
Advisory 1
More Rakuten Mobile, Inc. Viber vulnerabilities
- TI-2025-35211 Viber Desktop 25.6.0 is vulnerable to HTML Injection via the text parameter of the message compose/forward interface CVSS 3.1MEDIUM 6.3
- TI-2019-09383 A vulnerability in Viber before 10.7.0 for Desktop (Windows) could allow an attacker to… CVSS 3.0HIGH 7.8
- TI-2025-12320 Rakuten Viber uses broken or risky cryptographic Algorithm CVSS 3.1CRITICAL 9.8
- TI-2019-13537 Viber through 11.7.0.5 allows a remote attacker who can capture a victim's internet… CVSS 3.1HIGH 8.8
- TI-2018-02955 Information disclosure in Rakuten Viber CVSS 3.1MEDIUM 5.5
Sources
- CVE-2020-14049 · CVE Program
- CVE-2020-14049 · NVD
- FIRST EPSS
- GHSA-r3v6-qx45-r3j8 · GitHub Advisory Database · CC BY 4.0
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