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CVE-2003-0512

16
FAUCET Score

CVE-2003-0512 describes a vulnerability in Cisco IOS versions 12.2 and earlier where an invalid username results in a "% Login invalid" message instead of a password prompt, allowing remote attackers to enumerate valid usernames. This vulnerability has a CVSS score of 5.0, indicating a medium severity, with a low attack complexity and no authentication required, potentially leading to information disclosure (username enumeration). There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
12.0\(24\)s1CPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.0\(24\)s1:*:*:*:*:*:*:*
12.0\(24.2\)sCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.0\(24.2\)s:*:*:*:*:*:*:*
12.2\(11\)ja1CPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.2\(11\)ja1:*:*:*:*:*:*:*
12.2\(14.5\)CPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.2\(14.5\):*:*:*:*:*:*:*
12.2\(14.5\)tCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.2\(14.5\)t:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:P/I:N/A:N

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.20%
Probability of exploitation in next 30 days
EPSS Percentile
86.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0320 is in the 82nd percentile among its peer group of 23,705 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

archives.neohapsis.com / archives/vulnwatch/2003-q3/0056.html
Vendor Advisory
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5824
cisco.com / warp/public/707/cisco-sn-20030724-ios-enum.shtml
kb.cert.org / vuls/id/886796
US Government Resource
vigilante.com / inetsecurity/advisories/VIGILANTE-2003002.htm