Search

Find a vulnerability

Search criteria

    2 vulnerabilities found for Cato Client for Windows by Cato Networks

    CVE-2026-19377 (GCVE-0-2026-19377)

    Vulnerability from nvd – Published: 2026-10-15 07:02 – Updated: 2026-10-15 14:22
    VLAI
    Title
    Improper certificate validation in Cato Client tunnel handshake
    Summary
    Improper certificate validation in the tunnel handshake in Cato Client allows a man-in-the-middle attacker to impersonate a Cato Point of Presence (PoP) server and intercept or modify tunnel traffic.
    Severity
    6 (Medium)
    CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-10-15 14:22 UTC
    CWE
    • CWE-295 - Improper Certificate Validation
    Assigner
    Cato CNA under the mitre root
    CNA scorecard – unranked: 4 records in the last 180 days, 10 needed details
    References
    Impacted products
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-19377",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-15T14:22:50.675325Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-15T14:22:58.368Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Windows"
          ],
          "product": "Cato Client for Windows",
          "vendor": "Cato Networks",
          "versions": [
            {
              "lessThan": "6.12.6",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "macOS"
          ],
          "product": "Cato Client for macOS",
          "vendor": "Cato Networks",
          "versions": [
            {
              "lessThan": "6.1.1",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Linux"
          ],
          "product": "Cato Client for Linux",
          "vendor": "Cato Networks",
          "versions": [
            {
              "lessThan": "5.8.1",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "iOS"
          ],
          "product": "Cato Client for iOS",
          "vendor": "Cato Networks",
          "versions": [
            {
              "lessThan": "5.9",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Android"
          ],
          "product": "Cato Client for Android",
          "vendor": "Cato Networks",
          "versions": [
            {
              "lessThan": "5.6.2",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Improper certificate validation in the tunnel handshake in Cato Client allows a man-in-the-middle attacker to impersonate a Cato Point of Presence (PoP) server and intercept or modify tunnel traffic."
            }
          ],
          "value": "Improper certificate validation in the tunnel handshake in Cato Client allows a man-in-the-middle attacker to impersonate a Cato Point of Presence (PoP) server and intercept or modify tunnel traffic."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-94",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-94 Adversary in the Middle (AiTM)"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "ADJACENT",
            "baseScore": 6,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-295",
              "description": "CWE-295 Improper Certificate Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-15T07:02:10.937Z",
        "orgId": "2505284f-8ffb-486c-bf60-e19c1097a90b",
        "shortName": "Cato"
      },
      "references": [
        {
          "name": "Cato Networks Security Advisory",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://knowledge.catonetworks.com/docs/security-vulnerability-cve-2026-19377-that-impacts-cato-client-versions"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Improper certificate validation in Cato Client tunnel handshake",
      "x_generator": {
        "engine": "Vulnogram 1.0.4"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2505284f-8ffb-486c-bf60-e19c1097a90b",
    "assignerShortName": "Cato",
    "cveId": "CVE-2026-19377",
    "datePublished": "2026-10-15T07:02:10.937Z",
    "dateReserved": "2026-08-09T13:31:39.053Z",
    "dateUpdated": "2026-10-15T14:22:58.368Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

    CVE-2026-19377 (GCVE-0-2026-19377)

    Vulnerability from cvelistv5 – Published: 2026-10-15 07:02 – Updated: 2026-10-15 14:22
    VLAI
    Title
    Improper certificate validation in Cato Client tunnel handshake
    Summary
    Improper certificate validation in the tunnel handshake in Cato Client allows a man-in-the-middle attacker to impersonate a Cato Point of Presence (PoP) server and intercept or modify tunnel traffic.
    Severity
    6 (Medium)
    CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-10-15 14:22 UTC
    CWE
    • CWE-295 - Improper Certificate Validation
    Assigner
    Cato CNA under the mitre root
    CNA scorecard – unranked: 4 records in the last 180 days, 10 needed details
    References
    Impacted products
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-19377",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-15T14:22:50.675325Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-15T14:22:58.368Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Windows"
          ],
          "product": "Cato Client for Windows",
          "vendor": "Cato Networks",
          "versions": [
            {
              "lessThan": "6.12.6",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "macOS"
          ],
          "product": "Cato Client for macOS",
          "vendor": "Cato Networks",
          "versions": [
            {
              "lessThan": "6.1.1",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Linux"
          ],
          "product": "Cato Client for Linux",
          "vendor": "Cato Networks",
          "versions": [
            {
              "lessThan": "5.8.1",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "iOS"
          ],
          "product": "Cato Client for iOS",
          "vendor": "Cato Networks",
          "versions": [
            {
              "lessThan": "5.9",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Android"
          ],
          "product": "Cato Client for Android",
          "vendor": "Cato Networks",
          "versions": [
            {
              "lessThan": "5.6.2",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Improper certificate validation in the tunnel handshake in Cato Client allows a man-in-the-middle attacker to impersonate a Cato Point of Presence (PoP) server and intercept or modify tunnel traffic."
            }
          ],
          "value": "Improper certificate validation in the tunnel handshake in Cato Client allows a man-in-the-middle attacker to impersonate a Cato Point of Presence (PoP) server and intercept or modify tunnel traffic."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-94",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-94 Adversary in the Middle (AiTM)"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "ADJACENT",
            "baseScore": 6,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-295",
              "description": "CWE-295 Improper Certificate Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-15T07:02:10.937Z",
        "orgId": "2505284f-8ffb-486c-bf60-e19c1097a90b",
        "shortName": "Cato"
      },
      "references": [
        {
          "name": "Cato Networks Security Advisory",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://knowledge.catonetworks.com/docs/security-vulnerability-cve-2026-19377-that-impacts-cato-client-versions"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Improper certificate validation in Cato Client tunnel handshake",
      "x_generator": {
        "engine": "Vulnogram 1.0.4"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2505284f-8ffb-486c-bf60-e19c1097a90b",
    "assignerShortName": "Cato",
    "cveId": "CVE-2026-19377",
    "datePublished": "2026-10-15T07:02:10.937Z",
    "dateReserved": "2026-08-09T13:31:39.053Z",
    "dateUpdated": "2026-10-15T14:22:58.368Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}