CVE-2026-18257

{"id": "CVE-2026-18257", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-18257", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-29T18:04:43.478121Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "cve@gitlab.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.6, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 3.4, "exploitabilityScore": 2.2}]}, "affected": [{"source": "cve@gitlab.com", "affectedData": [{"vendor": "Systerel", "product": "S2OPC", "versions": [{"status": "affected", "version": "1.5.0", "lessThan": "2.0.0", "versionType": "semver"}], "defaultStatus": "unaffected"}]}], "published": "2026-07-29T17:16:51.540", "references": [{"url": "https://gitlab.com/systerel/S2OPC/-/work_items/1804", "source": "cve@gitlab.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "cve@gitlab.com", "description": [{"lang": "en", "value": "CWE-295"}]}], "descriptions": [{"lang": "en", "value": "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"}], "lastModified": "2026-07-30T14:15:31.167", "sourceIdentifier": "cve@gitlab.com"}