CVE-2020-29457 json
Improper Certificate Validation in OPCFoundation.NetStandard.Opc.Ua.Core
published 2021-02-16 5 y ago modified 2026-06-17 4 mo ago also GHSA-mjww-934m-h4jw , EUVD-2021-2369
- cvss
- 4.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 24%
- public exploits
- 0
- none known
Summary
A Privilege Elevation vulnerability in OPC UA .NET Standard Stack 1.4.363.107 could allow a rogue application to establish a secure connection.
Patch / fix
- nuget OPCFoundation.NetStandard.Opc.Ua.Core 1.4.365.10
- opcfoundation ua-.netstandard 1.4.365.10
Exploit prediction
0.31% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 4.4 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 2.1 | AV:L/AC:L/Au:N/C:N/I:P/A:N |
| GitHub | 3.1 | 4.4 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| nuget | OPCFoundation.NetStandard.Opc.Ua.Core | <1.4.365.10 |
1.4.365.10 |
Classification
- Weakness
-
- CWE-295 Improper Certificate Validation
References
-
opcfoundation.org
/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2020-29457.pdf
web, patch, vendor-advisory
-
github.com
/OPCFoundation/UA-.NETStandard/pull/1229
web
-
github.com
/OPCFoundation/UA-.NETStandard/pull/1229/commits/d815cfb972bd668c1b6e461f6ff97519d6b26f25
web
-
github.com
/OPCFoundation/UA-.NETStandard
web, third-party-advisory
-
nuget.org
/packages/OPCFoundation.NetStandard.Opc.Ua/
product, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2020-29457
advisory
-
nuget.org
/packages/OPCFoundation.NetStandard.Opc.Ua
web
Sources
- CVE List CVE-2020-29457
- GitHub Advisory GHSA-mjww-934m-h4jw
- NVD CVE-2020-29457
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