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Vulnerability record · CVE-2009-3663 · published 11 October 2009

CVE-2009-3663: Jasper httpdx vulnerability

Jasper · Httpdx

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.

10.0 CVSS 2.0 High EPSS 15% · top 3.5% CWE-134 · CWE-134
10.0CVSS 2.0 base score
15%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
12References
16 Jun 2026Last modified by NVD

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.

AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://httpdx.sourceforge.net/downloads/changelog.log
http://osvdb.org/58129
http://secunia.com/advisories/36734 Vendor Advisory
http://www.exploit-db.com/exploits/9657
http://www.vupen.com/english/advisories/2009/2654 PatchVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/53205
http://httpdx.sourceforge.net/downloads/changelog.log
http://osvdb.org/58129
http://secunia.com/advisories/36734 Vendor Advisory
http://www.exploit-db.com/exploits/9657
http://www.vupen.com/english/advisories/2009/2654 PatchVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/53205

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2009-3711httpdx HTTP GET stack buffer overflow in h_handlepeerhttpdx 1.4 (and possibly 1.4.3) contains a stack-based buffer overflow in the h_handlepeer function in http.cpp, triggered by a long HTTP GET request…EPSS 64%analysed9.3CVE-2009-4769Jasper httpdx vulnerabilityMultiple format string vulnerabilities in the tolog function in httpdx 1.4, 1.4.5, 1.4.6, 1.4.6b, and 1.5 allow (1) remote attackers to execute arbit…EPSS 38%7.5CVE-2009-4770Jasper httpdx vulnerabilityThe FTP server component in httpdx 1.4, 1.4.5, 1.4.6, 1.4.6b, and 1.5 has a default password of pass123 for the moderator account, which makes it eas…EPSS 1.3%5.0CVE-2009-4531Jasper httpdx information exposure vulnerabilityhttpdx 1.4.4 and earlier allows remote attackers to obtain the source code for a web page by appending a . (dot) character to the URI.EPSS 7.1%9.8CVE-2024-23113Fortinet FortiOS and related products format string remote code executionA use of externally-controlled format string (CWE-134) in Fortinet FortiOS, FortiProxy, FortiPAM and FortiSwitchManager lets an attacker execute unau…KEVEPSS 62%analysed5.5CVE-2021-25489Samsung Android modem driver format string bug causes kernel panicSamsung Android devices contain a missing input validation flaw in the modem interface driver, resulting in a format string bug. It is listed in CISA…KEVEPSS 0.53%analysed8.0CVE-2018-0175Cisco IOS, IOS XE and IOS XR LLDP format string flawA format string vulnerability exists in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco IOS, IOS XE and IOS XR Software. An unauthenticat…KEVEPSS 3.5%analysed8.1CVE-2019-1579PAN-OS GlobalProtect pre-auth remote code executionPAN-OS versions 7.1.18, 8.0.11-h1 and 8.1.2 and earlier contain a remote code execution flaw (CWE-134, format string) that is reachable when the Glob…KEVEPSS 46%analysed

Source: NIST National Vulnerability Database (record CVE-2009-3663), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.