CVE-2003-0512

Name: CVE-2003-0512
Creator: NVD / NIST
Published: 2003-08-27T04:00:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.20%

Last modified Jun 16, 2026

CVE-2003-0512 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 3.20% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

3.20%

86.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-310

Affected Software

Vendor	Product	Versions
Cisco	Ios	12.0\(24\)s1
Cisco	Ios	12.0\(24.2\)s
Cisco	Ios	12.2\(11\)ja1
Cisco	Ios	12.2\(14.5\)
Cisco	Ios	12.2\(14.5\)t
Cisco	Ios	12.2\(15\)zn
Cisco	Ios	12.2\(15.1\)s
Cisco	Ios	12.2\(16\)b
Cisco	Ios	12.2\(16.1\)b

References

Timeline

Published: Aug 27, 2003
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2003-0512?

How severe is CVE-2003-0512?

Severity scoring for CVE-2003-0512 is pending analysis. The EPSS model estimates a 3.20% probability of exploitation in the next 30 days.

How do I fix CVE-2003-0512?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2003-0512?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST