What’s Vulnerable › Vulnerabilities

CVE-2023-31048

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-12-12 · updated 2026-06-17
• Weakness: CWE-209

Description

The OPC UA .NET Standard Reference Server before 1.4.371.86. places sensitive information into an error message that may be seen remotely.

Affected products

• Opcfoundation Ua-.Netstandard: before 1.4.371.86 — fixed in 1.4.371.86

How to fix

Upgrade to a fixed version: Opcfoundation Ua-.Netstandard 1.4.371.86. Check the vendor advisory for mitigations.

References

• https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2023-31048.pdf
• https://github.com/OPCFoundation/UA-.NETStandard/releases
• https://github.com/OPCFoundation/UA-.NETStandard/releases/tag/1.4.371.86
• https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2023-31048.pdf
• https://github.com/OPCFoundation/UA-.NETStandard/releases
• https://github.com/OPCFoundation/UA-.NETStandard/releases/tag/1.4.371.86

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