CVE-2009-3663
Format string vulnerability in the h_readrequest function in http.c in httpdx Web Server 1.4...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2009-3663- CVSS 2.0
- 10.0 High
AV:N/AC:L/Au:N/C:C/I:C/A:C - Weakness
- CWE-134
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2009-3663- Updated
- 2026-11-02
EUVDEUVD-2009-3638 No score
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.
- Record
EUVD-2009-3638- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-gj4q-m5q3-4wfq No score
Format string vulnerability in the h_readrequest function in http.c in httpdx Web Server 1.4...
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.
- Record
GHSA-gj4q-m5q3-4wfq- Weakness
- CWE-134
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | httpdx 1.4 - HTTP Server Host Header Remote Format String Denial of Service | 2009-09-14 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2009-3663 is a high vulnerability (CVSS 10.0) in Jasper Httpdx, published October 11, 2009. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 14.6%, the 96th percentile. No source names a fixed version.