CVE-2026-6899

MEDIUM EPSS 1.4%

Published Jun 9, 20263w ago · Modified Jun 17, 20262w ago

5.6 CVSS 3.1

Medium

Published Jun 9, 2026 3w ago

Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score

5.6

Exploitability

2.2

Impact

3.4

Vector string

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Attack Vector Network

Attack Complexity High

Privileges Required None

User Interaction None

Scope Unchanged

Confidentiality Low

Integrity Low

Availability Low

Threat Intelligence

EPSS Exploit Probability

1.4% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-299

References 1

gitlab.com https://gitlab.com/systerel/S2OPC/-/work_items/1739

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.