CVE-1999-0506

NONECVSS 0.0Weaponized

0.0

A Windows NT domain user or administrator account has a default, null, blank, or missing password.

CVSS v3: —
EG Score: —
EPSS: 88.0%
KEV: Not listed

Published

October 1, 1998

Last Modified

April 16, 2026

References (2)

cve@mitrehttps://www.cve.org/CVERecord?id=CVE-1999-0506
af854a3a-2127-422b-91ae-364da2661108https://www.cve.org/CVERecord?id=CVE-1999-0506

Data Freshness Timeline

(refreshed 13× in last 7d / 19× 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.

2026-05-29 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
2026-05-28 13:42 UTCepss_batch
2026-05-27 13:37 UTCepss_batch
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2026-05-26 13:41 UTCepss_batch
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2026-05-26 07:16 UTCepss_batch
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2026-05-24 16:42 UTCepss_batch
2026-05-21 22:38 UTCepss_batch
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2026-05-20 11:20 UTCepss_batch
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Publicly available exploits

(3 references)

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

Metasploitauxiliary/scanner/mssql/mssql_login✓ verified
First seen Jan 1, 1999
MSSQL Login Utility
Open source ↗
Metasploitauxiliary/scanner/smb/smb_login✓ verified
First seen Jan 1, 1999
SMB Login Check Scanner
Open source ↗
Metasploitauxiliary/scanner/vnc/vnc_login✓ verified
First seen Jan 1, 1999
VNC Authentication Scanner
Open source ↗

Frequently asked(4)

What is CVE-1999-0506?

CVE-1999-0506 is a none vulnerability published on October 1, 1998. A Windows NT domain user or administrator account has a default, null, blank, or missing password.

When was CVE-1999-0506 disclosed?

CVE-1999-0506 was first published in the National Vulnerability Database on October 1, 1998, 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-1999-0506 actively exploited?

CVE-1999-0506 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 88.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-1999-0506?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-1999-0506, 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

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CVE-1999-0506

📅 Published

🔄 Last Modified

🔗 References (2)