Cyber Resilience

CVE-2022-39823

High

Published: 20 October 2022

Published
20 October 2022
Modified
08 May 2025
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 0.0050 66.6th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2022-39823 is a high-severity Use After Free (CWE-416) vulnerability in Softing Opc. Its CVSS base score is 7.5 (High).

Operationally, ranked in the top 33.4% 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 5.66 through 6.x before 6.10. An OPC/UA browse request exceeding the server limit on continuation points may cause a use-after-free error

CWE(s)
CWE-416

Related Threats

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

Affected Assets

softing
opc
5.20 — 5.22
softing
opc ua c\+\+ software development kit
5.70 — 6.00

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SI-16 Memory Protection
addresses: CWE-416

Use-after-free exploits that achieve arbitrary code execution are blocked or significantly hardened by non-executable pages and ASLR.

References