How severe is CVE-2022-39823?

CVE-2022-39823 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2022-39823 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-39823?

CVE-2022-39823 primarily affects Softing Opc. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-39823?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2022-39823 published?

CVE-2022-39823 was published on 2022-10-20 and last updated on 2026-06-17.

CVE-2022-39823

CVE-2022-39823 is a high-severity vulnerability in Softing Opc with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-416.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-416
Affected product: Softing Opc
Published: 2022-10-20
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2022-39823?: 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
How severe is CVE-2022-39823?: CVE-2022-39823 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2022-39823 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-39823?: CVE-2022-39823 primarily affects Softing Opc. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-39823?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2022-39823 published?: CVE-2022-39823 was published on 2022-10-20 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:softing:opc:*:*:*:*:*:*:*:*
cpe:2.3:a:softing:opc_ua_c\+\+_software_development_kit:*:*:*:*:*:*:*:*

More vulnerabilities in Softing Opc

CVE-2022-2336 — Critical (CVSS 9.8): Softing Secure Integration Server, edgeConnector, and edgeAggregator software ships with the default administrator…
CVE-2020-14524 — Critical (CVSS 9.8): Softing Industrial Automation all versions prior to the latest build of version 4.47.0, The affected product is…
CVE-2023-41151 — High (CVSS 7.5): An uncaught exception issue discovered in Softing OPC UA C++ SDK before 6.30 for Windows operating system may cause the…
CVE-2023-37572 — High (CVSS 7.5): Softing OPC Suite version 5.25 and before has Incorrect Access Control, allows attackers to obtain sensitive…
CVE-2022-37453 — High (CVSS 7.5): An issue was discovered in Softing OPC UA C++ SDK before 6.10. A buffer overflow or an excess allocation happens due to…
CVE-2022-2547 — High (CVSS 7.5): A crafted HTTP packet without a content-type header can create a denial-of-service condition in Softing Secure…

All CVEs affecting Softing Opc →

Other CWE-416 (Use After Free) vulnerabilities

CVE-2026-13782 — Critical (CVSS 10.0): Use after free in Browser in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the…
CVE-2026-4725 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149…
CVE-2026-4688 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox…
CVE-2025-24085 — Critical (CVSS 10.0): A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.3 and iPadOS 18.3,…
CVE-2024-43102 — Critical (CVSS 10.0): Concurrent removals of certain anonymous shared memory mappings by using the UMTX_SHM_DESTROY sub-request of…
CVE-2021-32495 — Critical (CVSS 10.0): Radare2 has a use-after-free vulnerability in pyc parser's get_none_object function. Attacker can read freed memory…

Browse all CWE-416 (Use After Free) vulnerabilities →