CVE-2009-3663 in the critical feed json
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 s…
published 2009-10-11 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-3638
- cvss
- 10.0
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 14.6%
- EPSS 14.6% chance of exploitation in 30 days, percentile 96%
- public exploits
- 1
- Exploit-DB
Summary
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.
Patch / fix
Timeline
- First public exploit (EDB-9657)
- Published
Exploit prediction
14.63% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-9657 httpdx 1.4 - HTTP Server Host Header Remote Format String Denial of Service dos, 2009-09-14
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-134 Use of Externally-Controlled Format String
References
-
vupen.com
/english/advisories/2009/2654
vdb-entry, patch, vendor-advisory
-
exploit-db.com
/exploits/9657
exploit
-
secunia.com
/advisories/36734
third-party-advisory, vendor-advisory
-
osvdb.org
/58129
vdb-entry
-
exchange.xforce.ibmcloud.com
/vulnerabilities/53205
vdb-entry
- httpdx.sourceforge.net /downloads/changelog.log
Sources
- CVE List CVE-2009-3663
- NVD CVE-2009-3663
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.