CVE-2001-1263

Pragma InterAccess 4.0 build 5 - Denial of Service via Telnet Port Overflow

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2001-1263. PoCs published by nemesystm.

AI-analyzed exploit summary This exploit sends a large burst of data (15000+ characters) to port 23 (telnet) of Pragma InterAccess 4.0, causing the server to crash due to a potential buffer overflow. It does not execute arbitrary code but demonstrates a DoS condition.

Description

telnet95.exe in Pragma InterAccess 4.0 build 5 allows remote attackers to cause a denial of service (crash) via a large number of characters to port 23, possibly due to a buffer overflow.

Exploits (1)

exploitdb WORKING POC VERIFIED
by nemesystm · perldoswindows
https://www.exploit-db.com/exploits/20904

This exploit sends a large burst of data (15000+ characters) to port 23 (telnet) of Pragma InterAccess 4.0, causing the server to crash due to a potential buffer overflow. It does not execute arbitrary code but demonstrates a DoS condition.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Pragma InterAccess 4.0
No auth needed
Prerequisites: Network access to port 23 (telnet) on the target host
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/2834
Exploit, Vendor Advisory mailing-list x_refsource_bugtraq
http://online.securityfocus.com/archive/1/189327
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/6658

Scores

EPSS 0.0756
EPSS Percentile 93.7%

Details

Status published
Products (1)
pragma_systems/interaccess 4.0_build_5
Published Jun 06, 2001
Tracked Since Feb 18, 2026