CVE-2003-0190

Status: ModifiedMedium (5)—💥 Exploit

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.

CVSS

Version: 2.0
Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N
Base score: 5

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 77%
Percentile among all scored CVEs: 100
Score date: 10/6/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

💥 Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.

Published on Exploit-DB · Portable OpenSSH 3.6.1p-PAM/4.1-SuSE - Timing Attack (2/13/2007)
Published on Exploit-DB · OpenSSH/PAM 3.6.1p1 - 'gossh.sh' Remote Users Ident (5/2/2003)
Published on Exploit-DB · OpenSSH/PAM 3.6.1p1 - Remote Users Discovery Tool (4/30/2003)

Affected technologies (4)

Openbsd — Openssh Openpkg — Openpkg Siemens — Scalance X204rna ECC Firmware Siemens — Scalance X204rna Firmware

CWEs

CWE-203

References

Raw JSON (NVD)

Show

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