Failure to validate certificates in OPC Foundation UA Client Applications communicating…
Priority LOW 24CWE-295Published · Updated
Key facts
- Attack vector
- Physical
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and GitHub. Impact type from CWE-295.
Summary
Failure to validate certificates in OPC Foundation UA Client Applications communicating without security allows attackers with control over a piece of network infrastructure to decrypt passwords.
Why it matters now
EPSS 0.00286 21st percentileScored 2026-11-07
Fix Fixed OPCFoundation.NetStandard.Opc.Ua (NuGet): 1.4.353.15
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | OPCFoundation.NetStandard.Opc.Ua (NuGet) | before 1.4.353.15 | 1.4.353.15 | Patch available | GHSA-8336-mxp6-v5h9 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- OPCFoundation.NetStandard.Opc.Ua (NuGet) Vendor— Affected before 1.4.353.15 Fixed in 1.4.353.15 Patch available GHSA-8336-mxp6-v5h9
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:opcfoundation:ua-.net-legacy:*:*:*:*:*:*:*:* | 1.03.342 | Vulnerable | OPC Foundation |
| cpe:2.3:a:opcfoundation:ua-.netstandard:*:*:*:*:*:*:*:* | 1.4.353.15 | Vulnerable | OPC Foundation |
- cpe:2.3:a:opcfoundation:ua-.net-legacy:*:*:*:*:*:*:*:* Versions 1.03.342 Vulnerable ·OPC Foundation
- cpe:2.3:a:opcfoundation:ua-.netstandard:*:*:*:*:*:*:*:* Versions 1.4.353.15 Vulnerable ·OPC Foundation
Remediation
- Fix · GHSA-8336-mxp6-v5h9 OPCFoundation.NetStandard.Opc.Ua (NuGet) Fixed in 1.4.353.15 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2018-12087
- 2026-10-03 Alias added: GHSA-8336-mxp6-v5h9
References
More OPC Foundation Ua-.net-legacy vulnerabilities
- TI-2017-08865 Unsigned versions of the DLLs distributed by the OPC Foundation may be replaced with malicious code. CVSS 3.0HIGH 8.8
- TI-2018-09034 An XXE vulnerability in the OPC UA Java and .NET Legacy Stack can allow remote attackers to trigger a denial of service. CVSS 3.0HIGH 8.2
- TI-2021-08921 Uncontrolled recursion in OPC Foundation OPC UA .NET Standard and OPC UA .NET Legacy CVSS 3.1HIGH 7.5
- TI-2018-05465 An issue was discovered in OPC UA .NET Standard Stack and Sample Code before GitHub… CVSS 3.0MEDIUM 5.3
Sources
- CVE-2018-12087 · CVE Program
- CVE-2018-12087 · NVD
- FIRST EPSS
- GHSA-8336-mxp6-v5h9 · GitHub Advisory Database · CC BY 4.0
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