# CVE-2003-0190

## Summary

- **CVE ID:** CVE-2003-0190
- **Severity:** UNKNOWN
- **CVSS Score:** 0.69
- **CWE:** N/A
- **Published:** May 2, 2003
- **Last Modified:** Mar 16, 2026

## Description

OpenSSH-portable (OpenSSH) 3.6.1p1 and earlier with PAM support enabled immediately sends an error message when a user does not exist, which allows remote attackers to determine valid usernames via a timing attack.

## Affected Products

- n/a — n/a (n/a)

## References

- [CNA](http://www.redhat.com/support/errata/RHSA-2003-222.html)
- [CNA](http://marc.info/?l=bugtraq&m=105172058404810&w=2)
- [CNA](http://www.securityfocus.com/bid/7467)
- [CNA](http://marc.info/?l=bugtraq&m=106018677302607&w=2)
- [CNA](http://www.redhat.com/support/errata/RHSA-2003-224.html)
- [CNA](https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A445)
- [CNA](http://lab.mediaservice.net/advisory/2003-01-openssh.txt)
- [CNA](http://www.turbolinux.com/security/TLSA-2003-31.txt)
- [CNA](http://lists.grok.org.uk/pipermail/full-disclosure/2003-April/004815.html)
- [CNA](https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 17.16%
- **EPSS Percentile:** 94.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-17._