Cyber Resilience

CVE-2021-42577

High

Published: 11 March 2022

Published
11 March 2022
Modified
21 November 2024
KEV Added
—
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 0.0041 61.7th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-42577 is a high-severity NULL Pointer Dereference (CWE-476) vulnerability in Softing Datafeed Opc Suite. Its CVSS base score is 7.5 (High).

Operationally, ranked in the top 38.3% 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 OPC UA C++ SDK before 5.70. A malformed OPC/UA message abort packet makes the client crash with a NULL pointer dereference.

CWE(s)
CWE-476

Related Threats

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

Affected Assets

softing
datafeed opc suite
≤ 5.19
softing
opc ua c\+\+ software development kit
≤ 5.70.0
softing
secure integration server
≤ 1.22

Mitigating Controls

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

References