CVE-2026-6899

—

CVSS 3.1

5.6 medium

EPSS

<1%p1

Published

Jun 9, 2026 (Jun 9, 2026)

Modified

Jul 23, 2026

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.

Weakness: CWE-299
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

NVD CVE.org GitHub PoCs EPSS (0.1%)

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