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.NET
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Not in CISA KEV
MEDIUM severity

CVE-2024-42513 — OPCFoundation.NetStandard…

MEDIUM

CVE-2024-42513 is a medium-severity (CVSS 5.3) CWE-305 vulnerability in OPCFoundation.NetStandard.Opc.Ua.Bindings.Https. A fix is available for OPCFoundation.NetStandard.Opc.Ua.Bindings.Https — see the affected versions and patch details below.

Security Update for the OPC UA .NET Standard Stack

Also known asGHSA-4rcc-7pg7-f57f
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 11, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2024-42513.

EPSS Exploitation Probability

via FIRST.org ↗
0.6%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs48th percentile — riskier than 48% of all scored CVEsHighest risk
0.00%0.36%0.72%1.08%0.0%0.6%Jun 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
.NETOPCFoundation.NetStandard.Opc.Ua.Bindings.Https

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects NuGet packages — download data is not available via public APIs for these ecosystems.

Description

This security update resolves a vulnerability in the OPC UA .NET Standard Stack that allows an unauthorized attacker to bypass application authentication when using HTTPS endpoints.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
.NETNuGetOPCFoundation.NetStandard.Opc.Ua.Bindings.Httpsall versions1.5.374.158dotnet add package OPCFoundation.NetStandard.Opc.Ua.Bindings.Https --version 1.5.374.158

Affected Products

1 product · 1 configurations
Application
ua .net standard stackopcfoundation
< 1.5.374.158
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for OPCFoundation.NetStandard.Opc.Ua.Bindings.Https, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update OPCFoundation.NetStandard.Opc.Ua.Bindings.Https to 1.5.374.158 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2024-42513 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

This security update resolves a vulnerability in the OPC UA .NET Standard Stack that allows an unauthorized attacker to bypass application authentication when using HTTPS endpoints.
O3 Security · Impact-Aware SCA

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CVE-2024-42513: OPCFoundation — Fixed in 1.5.374.158