// For flags

CVE-2011-5009

CoDeSys 3.4 - Null Pointer Invalid HTTP Request Parsing Remote Denial of Service

Severity Score

7.5
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

3
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

El módulo CmpWebServer.dll en el servicio de Control en 3S CoDeSys v3.4 SP4 Patch 2 permite a atacantes remotos causar una denegación de servicio (NULL pointer dereference) mediante (1) un Content-Length manipulado en un HTTP POST o (2) un método de solicitud HTTP inválido.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2011-11-30 First Exploit
  • 2011-12-24 CVE Reserved
  • 2011-12-25 CVE Published
  • 2024-08-07 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
3ssoftware
Search vendor "3ssoftware"
 Codesys
Search vendor "3ssoftware" for product "Codesys"
 3.4
Search vendor "3ssoftware" for product "Codesys" and version "3.4"
sp4
Affected