AUGUST 4, 2026
Live Feed
Back to database
Case File

CVE-2021-40873

HIGH · CVSS 7.5 EPSS 1.27%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-11-10 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. It may be remotely exploitable. It may lead to a denial-of-service condition.

CVE
CVE-2021-40873
Severity
HIGH
CVSS
7.5
EPSS
1.27%

Original NVD Description

An issue was discovered in Softing Industrial Automation OPC UA C++ SDK before 5.66, and uaToolkit Embedded before 1.40. Remote attackers to cause a denial of service (DoS) by sending crafted messages to a client or server. The server process may crash unexpectedly because of a double free, and must be restarted.

Related CVEs

Other vulnerabilities affecting the same vendor(s)