CVE-2003-0899
Buffer overflow in defang in libhttpd.c for thttpd 2.21 to 2.23b1 allows remote attackers to execute arbitrary code via requests that…
- 9.8CriticalCVSS base score
- 22.2%Exploitation in 30 daysEPSS · top 2.3% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 2Public exploitsMetasploit, Nuclei and Exploit-DB
Description
Buffer overflow in defang in libhttpd.c for thttpd 2.21 to 2.23b1 allows remote attackers to execute arbitrary code via requests that contain '<' or '>' characters, which trigger the overflow when the characters are expanded to "<" and ">" sequences.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list 2 Exploit-DB entries for it.
Show the exploits2
Exploit-DB2 entries
- thttpd 2.2x - 'defang' Remote Buffer Overflow (PoC) (Exploit-DB entry) (opens in a new tab)
EDB-ID 23305dos, linuxpublished 27 Oct 2003Verified
- thttpd 2.2x - 'defang' Remote Buffer Overflow (Exploit-DB entry) (opens in a new tab)
EDB-ID 23306remote, linuxpublished 27 Oct 2003Verified
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By mitre
- 2 days later
· 2 days later
Published
- 21 years later
· 21 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 22.2% · top 2.3% of all CVEs (9 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Affected products
n/a
- affected n/a
References
7
- 8906 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- DSA-396 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- 10092 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 2729 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- http://www.texonet.com/advisories/TEXONET-20030908.txt (opens in a new tab)x_refsource_MISCx_transferred
- 20031027 Remote overflow in thttpd (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- thttpd-defang-bo(13530) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2003-0889 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2003-0899)Record last updated .