CVE-2011-5009
The CmpWebServer.dll module in the Control service in 3S CoDeSys 3.4 SP4 Patch 2 allows remote...
CVE-2011-5009 is a medium vulnerability (CVSS 5.0) in 3ssoftware Codesys, published December 25, 2011. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 10.4%, the 95th percentile. No source names a fixed version.
- Severity
- 5.0 MediumCVSS 2.0, NVD
- Exploit chance
- 10.4%EPSS, 95th percentile
- Exploitation
- None known2 public exploits
- Fixed in
- No fix listedNo source names one
Description
The CmpWebServer.dll module in the Control service in 3S CoDeSys 3.4 SP4 Patch 2 allows remote attackers to cause a denial of service (NULL pointer dereference) via (1) a crafted Content-Length in an HTTP POST or (2) an invalid HTTP request method.
Exploit likelihood
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | CoDeSys 3.4 - POST Null Pointer Content-Length Parsing Remote Denial of Service | 2011-11-30 |
| Exploit-DB | CoDeSys 3.4 - Null Pointer Invalid HTTP Request Parsing Remote Denial of Service | 2011-11-30 |
What each source reports
NVD Score used
The CmpWebServer.dll module in the Control service in 3S CoDeSys 3.4 SP4 Patch 2 allows remote attackers to cause a denial of service (NULL pointer dereference) via (1) a crafted Content-Length in an HTTP POST or (2) an invalid HTTP request method.
- Record
CVE-2011-5009- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Updated
- 2026-11-02
CVE ListNo score
The CmpWebServer.dll module in the Control service in 3S CoDeSys 3.4 SP4 Patch 2 allows remote attackers to cause a denial of service (NULL pointer dereference) via (1) a crafted Content-Length in an HTTP POST or (2) an invalid HTTP request method.
- Record
CVE-2011-5009- Updated
- 2026-11-02
EUVDEUVD-2011-4914No score
The CmpWebServer.dll module in the Control service in 3S CoDeSys 3.4 SP4 Patch 2 allows remote attackers to cause a denial of service (NULL pointer dereference) via (1) a crafted Content-Length in an HTTP POST or (2) an invalid HTTP request method.
- Record
EUVD-2011-4914- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-8jmv-f4p4-24wgNo score
The CmpWebServer.dll module in the Control service in 3S CoDeSys 3.4 SP4 Patch 2 allows remote...
The CmpWebServer.dll module in the Control service in 3S CoDeSys 3.4 SP4 Patch 2 allows remote attackers to cause a denial of service (NULL pointer dereference) via (1) a crafted Content-Length in an HTTP POST or (2) an invalid HTTP request method.
- Record
GHSA-8jmv-f4p4-24wg- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
References
us-cert.gov/control_systems/pdf/ICS-ALERT-11-336-01A.pdf
seclists.org/bugtraq/2011/Nov/178
secunia.com/advisories/47018
aluigi.altervista.org/adv/codesys_1-adv.txt
osvdb.org/77388
exchange.xforce.ibmcloud.com/vulnerabilities/71533
nvd.nist.gov/vuln/detail/CVE-2011-5009
github.com/advisories/GHSA-8jmv-f4p4-24wg