CVE-1999-0904

BFTelnet - Denial of Service via Long Username

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-1999-0904. PoCs published by Ussr Labs.

AI-analyzed exploit summary This exploit demonstrates a denial-of-service (DoS) vulnerability in BFTelnet for Windows NT by sending an excessively long username (3090+ characters), causing the service to crash.

Description

Buffer overflow in BFTelnet allows remote attackers to cause a denial of service via a long username.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Ussr Labs · textdoswindows
https://www.exploit-db.com/exploits/19596

This exploit demonstrates a denial-of-service (DoS) vulnerability in BFTelnet for Windows NT by sending an excessively long username (3090+ characters), causing the service to crash.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: BFTelnet (Windows NT)
No auth needed
Prerequisites: Network access to the target telnet server
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (1)

Core 1
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/771

Scores

EPSS 0.0521
EPSS Percentile 91.4%

Details

Status published
Products (1)
byte_fusion/bftelnet 1.1
Published Nov 03, 1999
Tracked Since Feb 18, 2026