CVE-2005-2451

NONECVSS 0.0

0.0

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.

CVSS v3: —
EG Score: —
EPSS: 87.7%
KEV: Not listed

Published

August 3, 2005

Last Modified

April 16, 2026

References (20)

cve@mitrehttp://archives.neohapsis.com/archives/fulldisclosure/2005-07/0663.html
cve@mitrehttp://secunia.com/advisories/16272
cve@mitrehttp://securitytracker.com/id?1014598
cve@mitrehttp://www.cisco.com/warp/public/707/cisco-sa-20050729-ipv6.shtml
cve@mitrehttp://www.kb.cert.org/vuls/id/930892
cve@mitrehttp://www.osvdb.org/18332
cve@mitrehttp://www.securityfocus.com/bid/14414
cve@mitrehttp://www.us-cert.gov/cas/techalerts/TA05-210A.html
cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/21591
cve@mitrehttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5445
af854a3a-2127-422b-91ae-364da2661108http://archives.neohapsis.com/archives/fulldisclosure/2005-07/0663.html
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/16272
af854a3a-2127-422b-91ae-364da2661108http://securitytracker.com/id?1014598
af854a3a-2127-422b-91ae-364da2661108http://www.cisco.com/warp/public/707/cisco-sa-20050729-ipv6.shtml
af854a3a-2127-422b-91ae-364da2661108http://www.kb.cert.org/vuls/id/930892

Data Freshness Timeline

(refreshed 11× in last 7d / 18× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-29 13:40 UTCepss_batch
2026-05-29 13:40 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-27 13:37 UTCepss_batch
2026-05-26 13:41 UTCepss_batch
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2026-05-26 07:16 UTCepss_batch
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2026-05-24 16:42 UTCepss_batch
2026-05-22 21:15 UTCepss_batch
2026-05-21 22:38 UTCepss_batch
2026-05-20 22:36 UTCepss_batch
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2026-05-20 11:20 UTCepss_batch
2026-05-20 11:20 UTCepss_batch
2026-05-18 21:29 UTCepss_batch

Frequently asked(4)

What is CVE-2005-2451?

CVE-2005-2451 is a none vulnerability published on August 3, 2005. 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.

When was CVE-2005-2451 disclosed?

CVE-2005-2451 was first published in the National Vulnerability Database on August 3, 2005, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2005-2451 actively exploited?

CVE-2005-2451 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 87.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2005-2451?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2005-2451, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2005-2451

📅 Published

🔄 Last Modified

🔗 References (20)