CVE-2005-1086

AN HTTPD Server 1.42n - Remote Code Execution via Long User-Agent Header

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2005-1086. PoCs published by Tan Chew Keong.

AI-analyzed exploit summary This exploit targets a buffer overflow vulnerability in AN HTTPD's 'cmdIS.DLL' by sending an HTTP GET request with an excessively long 'user-agent' header. The overflow occurs when 'GetEnvironmentStrings' copies environment variables into a finite buffer, potentially leading to arbitrary code execution.

Description

Buffer overflow in the cmdIS.DLL plugin for AN HTTPD Server 1.42n allows remote attackers to execute arbitrary code via an HTTP request with a long User-Agent header.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Tan Chew Keong · textdoswindows
https://www.exploit-db.com/exploits/25364

This exploit targets a buffer overflow vulnerability in AN HTTPD's 'cmdIS.DLL' by sending an HTTP GET request with an excessively long 'user-agent' header. The overflow occurs when 'GetEnvironmentStrings' copies environment variables into a finite buffer, potentially leading to arbitrary code execution.

Classification
Working Poc 90%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: AN HTTPD 1.42n
No auth needed
Prerequisites: Network access to the target server · AN HTTPD with vulnerable 'cmdIS.DLL'
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (6)

Core 6
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_osvdb
http://www.osvdb.org/15361
Vendor Advisory x_refsource_misc
http://www.security.org.sg/vuln/anhttpd142n.html
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/14861
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://securitytracker.com/id?1013666
Exploit vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/13066
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/20029

Scores

EPSS 0.0557
EPSS Percentile 91.9%

Details

Status published
Products (1)
an/an-httpd 1.42n
Published May 02, 2005
Tracked Since Feb 18, 2026