CVE-2026-18257

Improper validity period check for root issuer certificate in CycloneCrypto cryptographic wrapper of S2OPC allows a certificate issued by this root issuer to be considered trusted...

CVE-2026-18257

In CVE-2026-18257, the issue affects the CycloneCrypto cryptographic wrapper used by S2OPC. The root cause is an improper validity period check for the root issuer certificate, which can lead to certificates issued by that root being treated as trusted. The cross-document details confirm the vuln...