How severe is CVE-2022-29866?

CVE-2022-29866 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-2022-29866 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-29866?

CVE-2022-29866 affects Opcfoundation Ua .net Standard Stack. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-29866?

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-2022-29866 published?

CVE-2022-29866 was published on 2022-06-16 and last updated on 2026-06-17.

CVE-2022-29866

CVE-2022-29866 is a high-severity vulnerability in Opcfoundation Ua .net Standard Stack 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-400.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-400
Affected product: Opcfoundation Ua .net Standard Stack
Published: 2022-06-16
Last modified: 2026-06-17

Description

OPC UA .NET Standard Stack 1.04.368 allows a remote attacker to exhaust the memory resources of a server via a crafted request that triggers Uncontrolled Resource Consumption.

Frequently asked questions

What is CVE-2022-29866?: OPC UA .NET Standard Stack 1.04.368 allows a remote attacker to exhaust the memory resources of a server via a crafted request that triggers Uncontrolled Resource Consumption.
How severe is CVE-2022-29866?: CVE-2022-29866 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-2022-29866 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-29866?: CVE-2022-29866 affects Opcfoundation Ua .net Standard Stack. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-29866?: 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-2022-29866 published?: CVE-2022-29866 was published on 2022-06-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:opcfoundation:ua_.net_standard_stack:*:*:*:*:*:*:*:*

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