// For flags

CVE-2021-40871

 

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

An issue was discovered in Softing Industrial Automation OPC UA C++ SDK before 5.66. Remote attackers to cause a denial of service (DoS) by sending crafted messages to a OPC/UA client. The client process may crash unexpectedly because of a wrong type cast, and must be restarted.

Se ha detectado un problema en Softing Industrial Automation OPC UA C++ SDK versiones anteriores a 5.66. Unos atacantes remotos pueden causar una denegación de servicio (DoS) mediante el envío de mensajes diseñados a un cliente OPC/UA. El proceso del cliente puede bloquearse inesperadamente debido a un reparto de tipos erróneo, y debe reiniciarse

*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
  • 2021-09-13 CVE Reserved
  • 2021-11-10 CVE Published
  • 2024-07-26 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-843: Access of Resource Using Incompatible Type ('Type Confusion')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Softing
Search vendor "Softing"
 Datafeed Opc Suite
Search vendor "Softing" for product "Datafeed Opc Suite"
 < 5.18
Search vendor "Softing" for product "Datafeed Opc Suite" and version " < 5.18"
-
Affected
Softing
Search vendor "Softing"
 Opc
Search vendor "Softing" for product "Opc"
 < 5.66
Search vendor "Softing" for product "Opc" and version " < 5.66"
-
Affected
Softing
Search vendor "Softing"
 Secure Integration Server
Search vendor "Softing" for product "Secure Integration Server"
 <= 1.22
Search vendor "Softing" for product "Secure Integration Server" and version " <= 1.22"
-
Affected
Softing
Search vendor "Softing"
 Th Scope
Search vendor "Softing" for product "Th Scope"
 >= 3.5
Search vendor "Softing" for product "Th Scope" and version " >= 3.5"
-
Affected