CVE-2003-0190

NONECVSS 0.0Trending — 4 sources updated this weekWeaponized

0.0

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 v3: —
EG Score: 0.0(none)
EPSS: 95.7%
KEV: Not listed

Published

May 12, 2003

Last Modified

April 16, 2026

References (20)

cve@mitrehttp://lab.mediaservice.net/advisory/2003-01-openssh.txt
cve@mitrehttp://lists.grok.org.uk/pipermail/full-disclosure/2003-April/004815.html
cve@mitrehttp://marc.info/?l=bugtraq&m=105172058404810&w=2
cve@mitrehttp://marc.info/?l=bugtraq&m=106018677302607&w=2
cve@mitrehttp://www.redhat.com/support/errata/RHSA-2003-222.html
cve@mitrehttp://www.redhat.com/support/errata/RHSA-2003-224.html
cve@mitrehttp://www.securityfocus.com/bid/7467
cve@mitrehttp://www.turbolinux.com/security/TLSA-2003-31.txt
cve@mitrehttps://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
cve@mitrehttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A445
af854a3a-2127-422b-91ae-364da2661108http://lab.mediaservice.net/advisory/2003-01-openssh.txt
af854a3a-2127-422b-91ae-364da2661108http://lists.grok.org.uk/pipermail/full-disclosure/2003-April/004815.html
af854a3a-2127-422b-91ae-364da2661108http://marc.info/?l=bugtraq&m=105172058404810&w=2
af854a3a-2127-422b-91ae-364da2661108http://marc.info/?l=bugtraq&m=106018677302607&w=2
af854a3a-2127-422b-91ae-364da2661108http://www.redhat.com/support/errata/RHSA-2003-222.html

Patch Availability(2)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
redhat	patch	2003-07-29	redhat
redhat	patch	2003-07-29	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-203Observable Discrepancy (Information Exposure via Side Channel)

All Vendor Advisories

(2)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 14× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:10 UTCepss_batch
2026-06-01 13:49 UTCepss_batch
2026-06-01 13:49 UTCepss_batch
2026-05-31 22:28 UTCepss_batch
2026-05-31 17:38 UTCEG score recompute
2026-05-31 17:38 UTCVendor advisory
2026-05-31 17:38 UTCGHSA enrichment
2026-05-31 00:13 UTCepss_batch
2026-05-31 00:13 UTCepss_batch
2026-05-29 13:40 UTCepss_batch
2026-05-29 13:40 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-27 13:37 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-24 16:42 UTCepss_batch
2026-05-22 21:15 UTCepss_batch
2026-05-22 09:07 UTCOSV refresh

Publicly available exploits

(4 references)

Working exploit code is in the public domain (1 Metasploit module) (3 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-3303✓ verified
First seen Feb 13, 2007
Portable OpenSSH 3.6.1p-PAM/4.1-SuSE - Timing Attack
Open source ↗
Exploit-DBEDB-26✓ verified
First seen May 2, 2003
OpenSSH/PAM 3.6.1p1 - 'gossh.sh' Remote Users Ident
Open source ↗
Exploit-DBEDB-25✓ verified
First seen Apr 30, 2003
OpenSSH/PAM 3.6.1p1 - Remote Users Discovery Tool
Open source ↗
Metasploitauxiliary/scanner/ssh/ssh_enumusers✓ verified
First seen Jan 1, 2003
SSH Username Enumeration
Open source ↗

Frequently asked(4)

What is CVE-2003-0190?

CVE-2003-0190 is a none vulnerability published on May 12, 2003. 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.

When was CVE-2003-0190 disclosed?

CVE-2003-0190 was first published in the National Vulnerability Database on May 12, 2003, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2003-0190 actively exploited?

CVE-2003-0190 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 95.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2003-0190?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2003-0190, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2003-0190

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CVE-2003-0190

Published

Last Modified

References (20)

Patch Availability(2)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Publicly available exploits

Frequently asked(4)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2003-0190?

Same vendor

Same CWE

CVE-2003-0190

📅 Published

🔄 Last Modified

🔗 References (20)

Patch Availability(2)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Publicly available exploits

❓ Frequently asked(4)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2003-0190?

🔗 Related CVEs(same vendor + same CWE)

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References (20)

Frequently asked(4)

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