CVE-2009-3711
CriticalPublic exploitStack-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.
Published Oct 16, 2009 · Updated Apr 22, 2026
Key Facts
Patch immediately- CVE-2009-3711 is a critical-severity vulnerability (CVSS 10.0 v2) affecting Httpdx (Jasper).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 64% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v2
10.0
AV:N/AC:L/Au:N/C:C/I:C/A:C
EPSS (30-day exploit likelihood)
64%
Higher than 99.2% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2009-3711 brief as a PDF
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Description
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.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| HttpdxJasper | 1.4, 1.4.3 | n/a |
Timeline
Publicly disclosed
Oct 16, 2009
Last updated
Apr 22, 2026
Weakness Type
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
References
- advisory36991
- advisoryADV-2009-2874
- exploit20091010 http://marc.info/?l=bugtraq&m=125544914512291&w=2
- exploitMSF httpdx_handlepeer.rb
- exploitExploitDB-10053
FAQ
Common Questions.
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.
Affected: Httpdx (Jasper) versions 1.4, 1.4.3. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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