Security Update for the OPC UA .NET Standard Stack
This security update resolves a vulnerability in the OPC UA .NET Standard Stack that allows an unauthorized attacker to bypass application authentication when the deprecated Basic128Rsa15 security policy is enabled.
Note that the Basic128Rsa15 is disabled by default so most users will not be affected. When this patch is applied the Server closes all channels using the Basic128Rsa15 if an attack is detected. This introduces a DoS before any compromise can occur which is preferable to a compromise. To prevent this failure, applications must stop using Basic128Rsa15.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| .NET (NuGet) | OPCFoundation.NetStandard.Opc.Ua.Core | < 1.5.374.158 | 1.5.374.158 |
References
- https://github.com/OPCFoundation/UA-.NETStandard/security/advisories/GHSA-h958-fxgg-g7w3
- https://nvd.nist.gov/vuln/detail/CVE-2024-42512
- https://github.com/OPCFoundation/UA-.NETStandard/commit/3543d0292556691f681e39145e2de4526b90487d
- https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2024-42512.pdf
- https://github.com/OPCFoundation/UA-.NETStandard
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N- Weakness (CWE)
CWE-208, CWE-639- Platform
- .NET (NuGet)
- Package
OPCFoundation.NetStandard.Opc.Ua.Core- Disclosed
- 03.03.2025
- Updated
- 11.10.2026 11:23
Sources and licenses
OSV / GitHub Advisory Database - GHSA-h958-fxgg-g7w3 - CC BY 4.0
Vulnerability history: OPCFoundation.NetStandard.Opc.Ua.Core
All published vulnerabilities of this package (.NET (NuGet)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 11
- First → latest
- 11.2021 03.2025
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 7
- Medium 4
Disclosures per year
- 2021: 1
- 2022: 5
- 2023: 1
- 2024: 3
- 2025: 1
- 2026: 0
-
Security Update for the OPC UA .NET Standard Stack this entry
Know which vulnerabilities affect your application
With the DockRay integration and software inventory enabled, DockRay checks reported component versions against known vulnerabilities and notifies you about confirmed matches. Coverage depends on the supported technology and available advisory data.