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Fencer Vulns
critical 10.0

CVE-2009-3711 in the critical feed json

Stack-based buffer overflow in the h_handlepeer function in http.cpp in httpdx 1.4, and possibly 1.4.3, allows remote attackers to cause a…

published 2009-10-16 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-3684

cvss
10.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
63.9%
EPSS 63.9% chance of exploitation in 30 days, percentile 99.2%
public exploits
3
Metasploit, Exploit-DB

Summary

Stack-based buffer overflow in the h_handlepeer function in http.cpp in httpdx 1.4, and possibly 1.4.3, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long HTTP GET request.

Timeline

  1. First public exploit (Metasploit exploit/windows/http/httpdx_handlepeer)
  2. Published

Exploit prediction

63.91% chance of exploitation in the next 30 days, higher than 99.2% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Metasploit exploit/windows/http/httpdx_handlepeer HTTPDX h_handlepeer() Function Buffer Overflow metasploit exploit, great rank, 2009-10-08
  • EDB-16799 httpdx - 'h_handlepeer()' Remote Buffer Overflow (Metasploit) remote, 2010-07-26
  • EDB-10053 httpdx 1.4 - GET Buffer Overflow remote, 2009-10-08
  • marc.info http://marc.info/?l=bugtraq&m=125544914512291&w=2 referenced PoC, tagged "exploit" by a source, unverified
  • pank4j.com http://www.pank4j.com/exploits/httpdxb0f.php referenced PoC, tagged "exploit" by a source, unverified

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-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

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.