What’s Vulnerable › Vulnerabilities
CVE-2003-0512
- Severity: medium (CVSS 5.0 v2.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 3.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2003-08-27 · updated 2026-06-16
- Weakness: CWE-310
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.
Affected products
- Cisco IOS: 12.0(24)s1, 12.0(24.2)s, 12.2(11)ja1, 12.2(14.5), 12.2(14.5)t, 12.2(15)zn (+3)
References
- http://archives.neohapsis.com/archives/vulnwatch/2003-q3/0056.html
- http://www.cisco.com/warp/public/707/cisco-sn-20030724-ios-enum.shtml
- http://www.kb.cert.org/vuls/id/886796
- http://www.vigilante.com/inetsecurity/advisories/VIGILANTE-2003002.htm
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5824
- http://archives.neohapsis.com/archives/vulnwatch/2003-q3/0056.html
- http://www.cisco.com/warp/public/707/cisco-sn-20030724-ios-enum.shtml
- http://www.kb.cert.org/vuls/id/886796
- http://www.vigilante.com/inetsecurity/advisories/VIGILANTE-2003002.htm
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5824
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