VULNERABILITY INTELLIGENCE

CVE-2021-40871

CVSS score7.5 HIGH
EPSS probability1.31%
CISA KEVNot currently listed
Published2021-11-10
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

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.

Weakness classification

  • nvd@nist.gov: CWE-843

Primary references