CVE-2005-2105

NONECVSS 0.0

0.0

Cisco IOS 12.2T through 12.4 allows remote attackers to bypass Authentication, Authorization, and Accounting (AAA) RADIUS authentication, if the fallback method is set to none, via a long username.

CVSS v3: —
EG Score: —
EPSS: 71.1%
KEV: Not listed

Published

July 5, 2005

Last Modified

April 16, 2026

References (8)

cve@mitrehttp://www.cisco.com/warp/public/707/cisco-sa-20050629-aaa.shtml
cve@mitrehttp://www.securitytracker.com/alerts/2005/Jun/1014330.html
cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/21190
cve@mitrehttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5756
af854a3a-2127-422b-91ae-364da2661108http://www.cisco.com/warp/public/707/cisco-sa-20050629-aaa.shtml
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/alerts/2005/Jun/1014330.html
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/21190
af854a3a-2127-422b-91ae-364da2661108https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5756

Data Freshness Timeline

(refreshed 9× in last 7d / 16× 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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2026-05-24 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
2026-05-20 22:36 UTCepss_batch
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-2005-2105?

CVE-2005-2105 is a none vulnerability published on July 5, 2005. Cisco IOS 12.2T through 12.4 allows remote attackers to bypass Authentication, Authorization, and Accounting (AAA) RADIUS authentication, if the fallback method is set to none, via a long username.

When was CVE-2005-2105 disclosed?

CVE-2005-2105 was first published in the National Vulnerability Database on July 5, 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-2005-2105 actively exploited?

CVE-2005-2105 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 71.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2005-2105?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2005-2105, 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-2005-2105

📅 Published

🔄 Last Modified

🔗 References (8)