CVE-2023-31048
Exposure of Sensitive Information in OPC UA .NET Standard Reference Server
The OPC UA .NET Standard Reference Server before 1.4.371.86. places sensitive information into an error message that may be seen remotely.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
The OPC UA .NET Standard Reference Server before 1.4.371.86. places sensitive information into an error message that may be seen remotely.
- Record
CVE-2023-31048- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-209
- Updated
- 2026-11-02
CVE List
The OPC UA .NET Standard Reference Server before 1.4.371.86. places sensitive information into an error message that may be seen remotely.
- Record
CVE-2023-31048- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-209
- Updated
- 2026-11-02
EUVDEUVD-2023-1466
The OPC UA .NET Standard Reference Server before 1.4.371.86. places sensitive information into an error message that may be seen remotely.
- Record
EUVD-2023-1466- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-4cvp-hr63-822j
Exposure of Sensitive Information in OPC UA .NET Standard Reference Server
This security update resolves a vulnerability in the OPC UA .NET Standard Reference Server that allows remote attackers to send malicious requests that expose sensitive information.
- Record
GHSA-4cvp-hr63-822j- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-200, CWE-209
- Updated
- 2026-11-02
OSV
The OPC UA .NET Standard Reference Server before 1.4.371.86. places sensitive information into an error message that may be seen remotely.
- Record
CVE-2023-31048- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
OSVGHSA-4cvp-hr63-822j
Exposure of Sensitive Information in OPC UA .NET Standard Reference Server
This security update resolves a vulnerability in the OPC UA .NET Standard Reference Server that allows remote attackers to send malicious requests that expose sensitive information.
- Record
GHSA-4cvp-hr63-822j- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-200, CWE-209
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
OPCFoundation.NetStandard.Opc.Ua.CoreNuGet |
before 1.4.371.86 | 1.4.371.86 |
OPCFoundation.NetStandard.Opc.Ua.ServerNuGet |
before 1.4.371.86 | 1.4.371.86 |
OPCFoundation.NetStandard.Opc.Ua.CoreNuGet |
before 1.4.371.86, plus listed versions 0.0.30.0.60.0.70.0.80.0.9 Show 44 moreShow less0.1.00.1.10.1.20.1.30.1.50.1.60.1.70.1.80.1.90.2.00.2.10.2.20.2.30.2.41.4.363.104-preview1.4.363.1071.4.364.401.4.365-gfc341ee8c51.4.365.1-preview1.4.365.101.4.365.21.4.365.231.4.365.481.4.366.31-preview1.4.366.381.4.367.1001.4.367.391.4.367.411.4.367.421.4.367.64-preview1.4.367.751.4.367.951.4.368.27-preview1.4.368.331.4.368.52-preview1.4.368.531.4.368.581.4.369.301.4.370.11.4.370.121.4.370.91.4.371.411.4.371.501.4.371.60 |
1.4.371.86 |
OPCFoundation.NetStandard.Opc.Ua.ServerNuGet |
before 1.4.371.86, plus listed versions 1.4.363.104-preview1.4.363.1071.4.364.401.4.365-gfc341ee8c51.4.365.1-preview Show 25 moreShow less1.4.365.101.4.365.21.4.365.231.4.365.481.4.366.31-preview1.4.366.381.4.367.1001.4.367.391.4.367.411.4.367.421.4.367.64-preview1.4.367.751.4.367.951.4.368.27-preview1.4.368.331.4.368.52-preview1.4.368.531.4.368.581.4.369.301.4.370.11.4.370.121.4.370.91.4.371.411.4.371.501.4.371.60 |
1.4.371.86 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-31048 is a medium vulnerability (CVSS 5.3) in Opcfoundation Ua-.netstandard, published May 5, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.79%, the 56th percentile. Fixed in OPCFoundation.NetStandard.Opc.Ua.Core 1.4.371.86.
References
github.com/OPCFoundation/UA-.NETStandard/releases
files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2023-31048.pdf
nvd.nist.gov/vuln/detail/CVE-2023-31048