Cyber Resilience

CVE-2021-40871

High

Published: 10 November 2021

Published
10 November 2021
Modified
21 November 2024
KEV Added
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Patch
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CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0063 70.7th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-40871 is a high-severity Type Confusion (CWE-843) vulnerability in Softing Datafeed Opc Suite. Its CVSS base score is 7.5 (High).

Operationally, ranked in the top 29.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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…

more

wrong type cast, and must be restarted.

CWE(s)
CWE-843

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

softing
datafeed opc suite
≤ 5.18
softing
opc
≤ 5.66
softing
secure integration server
≤ 1.22
softing
th scope
≥ 3.5

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References