CVE-1999-0991

NONECVSS 0.0Weaponized

0.0

Buffer overflow in GoodTech Telnet Server NT allows remote users to cause a denial of service via a long login name.

CVSS v3: —
EG Score: —
EPSS: 91.2%
KEV: Not listed

Published

December 6, 1999

Last Modified

April 16, 2026

References (2)

cve@mitrehttp://www.securityfocus.com/bid/862
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/862

Data Freshness Timeline

(refreshed 13× 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.

2026-05-29 13:40 UTCepss_batch
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Publicly available exploits

(1 reference)

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

Exploit-DBEDB-19666✓ verified
First seen Dec 6, 1999
GoodTech Telnet Server NT 2.2.1 - Denial of Service
Open source ↗

Frequently asked(4)

What is CVE-1999-0991?

CVE-1999-0991 is a none vulnerability published on December 6, 1999. Buffer overflow in GoodTech Telnet Server NT allows remote users to cause a denial of service via a long login name.

When was CVE-1999-0991 disclosed?

CVE-1999-0991 was first published in the National Vulnerability Database on December 6, 1999, 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-1999-0991 actively exploited?

CVE-1999-0991 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 91.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-1999-0991?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-1999-0991, 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.

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CVE-1999-0991

📅 Published

🔄 Last Modified

🔗 References (2)