Vulnerability · Published Nov 10, 2021 · Assigned by mitre

CVE-2021-40871

High 7.5

In plain English

A high-severity security flaw in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.3% (higher than 71% of all known vulnerabilities).

Severity (CVSS NVD)7.5High

Exploit odds (30 days)1.3%top 29.2% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
n/a	n/a	n/a

References

https://industrial.softing.com/ x_refsource_MISC
https://industrial.softing.com/fileadmin/sof-files/pdf/ia/support/Security_Bulletin-CVE-2021-40871.pdf x_refsource_MISC