How severe is CVE-2024-42513?

CVE-2024-42513 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2024-42513 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-42513?

CVE-2024-42513 affects Opcfoundation Ua .net Standard Stack. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-42513?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-42513 have an EU (EUVD) identifier?

Yes. CVE-2024-42513 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-5034.

When was CVE-2024-42513 published?

CVE-2024-42513 was published on 2025-02-10 and last updated on 2026-06-17.

CVE-2024-42513

CVE-2024-42513 is a medium-severity vulnerability in Opcfoundation Ua .net Standard Stack with a CVSS 3.x base score of 5.3. 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-305.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-5034
Weakness: CWE-305
Affected product: Opcfoundation Ua .net Standard Stack
Published: 2025-02-10
Last modified: 2026-06-17

Description

Vulnerability in the OPC UA .NET Standard Stack before 1.5.374.158 allows an unauthorized attacker to bypass application authentication when using HTTPS endpoints.

Frequently asked questions

What is CVE-2024-42513?: Vulnerability in the OPC UA .NET Standard Stack before 1.5.374.158 allows an unauthorized attacker to bypass application authentication when using HTTPS endpoints.
How severe is CVE-2024-42513?: CVE-2024-42513 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2024-42513 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-42513?: CVE-2024-42513 affects Opcfoundation Ua .net Standard Stack. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-42513?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-42513 have an EU (EUVD) identifier?: Yes. CVE-2024-42513 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-5034.
When was CVE-2024-42513 published?: CVE-2024-42513 was published on 2025-02-10 and last updated on 2026-06-17.

References

https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2024-42513.pdf

Affected products (1)

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

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