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5.0

GoodTech Telnet Server NT can crash from long login name

CVE-1999-0991 · published 26 years ago
Summary

The GoodTech Telnet Server NT service may stop working if someone supplies an unusually long username during logon. This can make remote access unavailable, disrupting your operations. Install the vendor’s update or configure the server to reject overly long usernames.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
goodtech telnet_server_nt 2.2.1
cpe:2.3:a:goodtech:telnet_server_nt:2.2.1:*:*:*:*:*:*:*
Original advisory text
Buffer overflow in GoodTech Telnet Server NT allows remote users to cause a denial of service via a long login name.
Buffer overflow in GoodTech Telnet Server NT allows remote users to cause a denial of service via a long login name.
References
Fix within
Internet-facing 14 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically (estimated)
  • Gives an attacker partial control (estimated)
Severity
5.0 Medium
Exploitation
2% chance of attack within 30 days
Timeline
Published6 Dec 1999
Updated29 Oct 2026
First seen29 Sep 2026
Sources
CVE-1999-0991 · NVD
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