CVE-2009-3663

httpdx Web Server 1.4 - Remote Code Execution via Host Header Format String Specifiers

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2009-3663. PoCs published by Pankaj Kohli.

AI-analyzed exploit summary This exploit targets a format string vulnerability in httpdx Web Server 1.4 via the Host header. It sends a malformed Host header with multiple format specifiers to trigger a denial of service (DoS).

Description

Format string vulnerability in the h_readrequest function in http.c in httpdx Web Server 1.4 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via format string specifiers in the Host header.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Pankaj Kohli · perldoswindows
https://www.exploit-db.com/exploits/9657

This exploit targets a format string vulnerability in httpdx Web Server 1.4 via the Host header. It sends a malformed Host header with multiple format specifiers to trigger a denial of service (DoS).

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: httpdx Web Server 1.4
No auth needed
Prerequisites: Network access to the target server · Target server running httpdx Web Server 1.4
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (6)

Core 6
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/53205
Patch, Vendor Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2009/2654
Third Party Advisory, VDB Entry vdb-entry x_refsource_osvdb
http://osvdb.org/58129
Exploit, Third Party Advisory exploit x_refsource_exploit-db
http://www.exploit-db.com/exploits/9657
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/36734

Scores

EPSS 0.1463
EPSS Percentile 96.2%

Details

CWE
CWE-134
Status published
Products (1)
jasper/httpdx 1.4
Published Oct 11, 2009
Tracked Since Feb 18, 2026