CVE-2023-31048

MEDIUMNVD 5.35.3—

5.3

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

CVSS v3: 5.3
EG Score: 5.3(medium)
EPSS: 58.7%
KEV: Not listed

Published

December 12, 2023

Last Modified

November 21, 2024

References (6)

cve@mitrehttps://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2023-31048.pdf
cve@mitrehttps://github.com/OPCFoundation/UA-.NETStandard/releases
cve@mitrehttps://github.com/OPCFoundation/UA-.NETStandard/releases/tag/1.4.371.86
af854a3a-2127-422b-91ae-364da2661108https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2023-31048.pdf
af854a3a-2127-422b-91ae-364da2661108https://github.com/OPCFoundation/UA-.NETStandard/releases
af854a3a-2127-422b-91ae-364da2661108https://github.com/OPCFoundation/UA-.NETStandard/releases/tag/1.4.371.86

Affected Packages

(2 across 1 ecosystem)

NuGet(2)

Package	Vulnerable range	Fixed in	Dependents
OPCFoundation.NetStandard.Opc.Ua.Core	0.0.3 ... 1.4.371.60 (49 versions)	1.4.371.86	—
OPCFoundation.NetStandard.Opc.Ua.Server	1.4.363.104-preview ... 1.4.371.60 (30 versions)	1.4.371.86	—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-209Generation of Error Message Containing Sensitive Information

Data Freshness Timeline

(refreshed 8× in last 7d / 8× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-24 12:19 UTCEG score recompute

Frequently asked(5)

What is CVE-2023-31048?

CVE-2023-31048 is a medium vulnerability published on December 12, 2023. The OPC UA .NET Standard Reference Server before 1.4.371.86. places sensitive information into an error message that may be seen remotely.

When was CVE-2023-31048 disclosed?

CVE-2023-31048 was first published in the National Vulnerability Database on December 12, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-31048 actively exploited?

CVE-2023-31048 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 58.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-31048?

CVE-2023-31048 has a CVSS v3 base score of 5.3 (NVD).

How do I remediate CVE-2023-31048?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-31048, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-31048

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