CVE-2021-40872

HIGH 7.5CVE-2021-40872 · Published 10/11/2021 · updated 17/06/2026

In short

CVE-2021-40872 is a HIGH (CVSS 7.5) vulnerability affecting smartlink hw-dp (softing), uatoolkit embedded (softing).
Chance of exploitation in the next 30 days (EPSS): 1.5%, higher than 74.5% of all vulnerabilities.
Fix: update to 1.40 or later.

Package	Affected versions	Patched versions
smartlink hw-dp softing	`≤ 1.10`	No fix yet
uatoolkit embedded softing	`< 1.40`	`1.40`

Description

An issue was discovered in Softing Industrial Automation uaToolkit Embedded before 1.40. Remote attackers to cause a denial of service (DoS) or login as an anonymous user (bypassing security checks) by sending crafted messages to a OPC/UA server. The server process may crash unexpectedly because of an invalid type cast, and must be restarted.

References

industrial.softing.com · Vendor Advisory
industrial.softing.com/fileadmin/sof-files/pdf/ia/support/Security_Bulletin_CVE-2021-40872.pdf · Vendor Advisory

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