FKIE_CVE-2026-6899

Vulnerability from fkie_nvd - Published: 2026-06-09 09:16 - Updated: 2026-07-23 08:10
Severity
5.6 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Summary
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.
References
cve@gitlab.comhttps://gitlab.com/systerel/S2OPC/-/work_items/1739
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "S2OPC",
          "vendor": "Systerel",
          "versions": [
            {
              "lessThan": "1.7.3",
              "status": "affected",
              "version": "1.5.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "cve@gitlab.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "La verificaci\u00f3n de revocaci\u00f3n de certificados solo considera la primera CRL coincidente e ignora otras CRL v\u00e1lidas de la misma CA en el envoltorio criptogr\u00e1fico CycloneCrypto de la biblioteca S2OPC. Podr\u00eda permitir la conexi\u00f3n entre un cliente OPC UA y un servidor utilizando un certificado revocado."
    }
  ],
  "id": "CVE-2026-6899",
  "lastModified": "2026-07-23T08:10:00.137",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 5.6,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 3.4,
        "source": "cve@gitlab.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-6899",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-09T14:25:36.868407Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-09T09:16:30.737",
  "references": [
    {
      "source": "cve@gitlab.com",
      "url": "https://gitlab.com/systerel/S2OPC/-/work_items/1739"
    }
  ],
  "sourceIdentifier": "cve@gitlab.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-299"
        }
      ],
      "source": "cve@gitlab.com",
      "type": "Secondary"
    }
  ]
}



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