Unrated severityNVD Advisory· Published Aug 27, 2003· Updated Jun 16, 2026
CVE-2003-0512
CVE-2003-0512
Description
Cisco IOS 12.2 and earlier generates a "% Login invalid" message instead of prompting for a password when an invalid username is provided, which allows remote attackers to identify valid usernames on the system and conduct brute force password guessing, as reported for the Aironet Bridge.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
10cpe:2.3:o:cisco:ios:12.0\(24.2\)s:*:*:*:*:*:*:*+ 9 more
- cpe:2.3:o:cisco:ios:12.0\(24.2\)s:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:12.0\(24\)s1:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:12.2\(11\)ja1:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:12.2\(14.5\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:12.2\(14.5\)t:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:12.2\(15.1\)s:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:12.2\(15\)zn:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:12.2\(16.1\)b:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:12.2\(16\)b:*:*:*:*:*:*:*
- (no CPE)range: <=12.2
Patches
Vulnerability mechanics
References
5- archives.neohapsis.com/archives/vulnwatch/2003-q3/0056.htmlnvdVendor Advisory
- www.kb.cert.org/vuls/id/886796nvdUS Government Resource
- www.cisco.com/warp/public/707/cisco-sn-20030724-ios-enum.shtmlnvd
- www.vigilante.com/inetsecurity/advisories/VIGILANTE-2003002.htmnvd
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5824nvd
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