Check for certificate revocation only considers the first matching CRL and ignores other valid CRLs of the same CA in the CycloneCrypto cryptographic wrapper of S2OPC library. It might allow connection between an OPC UA client and server using a revoked certificate.

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Fixes

Solution

Use MbedTLS cryptographic wrapper, or upgrade S2OPC to commit 3ff81301d95a77260e9deb791585a620c5623028 or release version > 1.7.2


Workaround

No workaround given by the vendor.

History

Tue, 09 Jun 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 09 Jun 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Systerel
Systerel s2opc
Vendors & Products Systerel
Systerel s2opc

Tue, 09 Jun 2026 08:45:00 +0000

Type Values Removed Values Added
Description Check for certificate revocation only considers the first matching CRL and ignores other valid CRLs of the same CA in the CycloneCrypto cryptographic wrapper of S2OPC library. It might allow connection between an OPC UA client and server using a revoked certificate.
Title Improper Check for Certificate Revocation in S2OPC
Weaknesses CWE-299
References
Metrics cvssV3_1

{'score': 5.6, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitLab

Published:

Updated: 2026-06-09T14:25:59.888Z

Reserved: 2026-04-23T07:01:03.918Z

Link: CVE-2026-6899

cve-icon Vulnrichment

Updated: 2026-06-09T14:25:52.844Z

cve-icon NVD

Status : Deferred

Published: 2026-06-09T09:16:30.737

Modified: 2026-06-09T15:25:56.860

Link: CVE-2026-6899

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-09T10:00:07Z

Weaknesses