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CVE-2026-84471 (GCVE-0-2026-84471)

Vulnerability from nvd – Published: 2026-10-14 14:29 – Updated: 2026-10-16 15:31

Summary

The fix for CVE-2026-12996 was incomplete. A use-after-free in OpenVPN 2.6.0 through 2.6.22 and 2.7_alpha1 through 2.7.7 allows remote authenticated peers to potentially cause a denial of service or leak memory via crafted packets during TLS session promotion or expiry.

Severity

7.2 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-16 15:17 UTC

CWE

CWE-416 - Use after free

Assigner

OpenVPN CNA under the mitre root

CNA scorecard C 74/100 over 27 records in the last 180 days details

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.6.0 , ≤ 2.6.22 (semver) Affected: 2.7_alpha1 , ≤ 2.7.7 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-84471",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-16T15:17:47.022957Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-16T15:31:52.556Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "OpenVPN",
          "vendor": "OpenVPN",
          "versions": [
            {
              "lessThanOrEqual": "2.6.22",
              "status": "affected",
              "version": "2.6.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "2.7.7",
              "status": "affected",
              "version": "2.7_alpha1",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The fix for CVE-2026-12996 was incomplete. A use-after-free in OpenVPN 2.6.0 through 2.6.22 and 2.7_alpha1 through 2.7.7 allows remote authenticated peers to potentially cause a denial of service or leak memory via crafted packets during TLS session promotion or expiry."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 7.2,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
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            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "LOW",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
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              "value": "GENERAL"
            }
          ]
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      ],
      "problemTypes": [
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          "descriptions": [
            {
              "cweId": "CWE-416",
              "description": "CWE-416 Use after free",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
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        "dateUpdated": "2026-10-14T14:29:04.851Z",
        "orgId": "36a55730-e66d-4d39-8ca6-3c3b3017965e",
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      },
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        }
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    "assignerShortName": "OpenVPN",
    "cveId": "CVE-2026-84471",
    "datePublished": "2026-10-14T14:29:04.851Z",
    "dateReserved": "2026-09-01T20:18:26.416Z",
    "dateUpdated": "2026-10-16T15:31:52.556Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-88964 (GCVE-0-2026-88964)

Vulnerability from nvd – Published: 2026-10-13 22:15 – Updated: 2026-10-14 18:09

Summary

An integer underflow in OpenVPN version 2.7_alpha3 through 2.7.7 on Windows and Android allows remote authenticated servers to cause a denial of service or memory disclosure via crafted domain search options

Severity

7.1 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-14 18:09 UTC

CWE

CWE-191 - Integer underflow (wrap or wraparound)
CWE-125 - Out-of-bounds read

Assigner

OpenVPN CNA under the mitre root

CNA scorecard C 74/100 over 27 records in the last 180 days details

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.7_alpha3 , ≤ 2.7.7 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
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              "content": {
                "id": "CVE-2026-88964",
                "options": [
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                    "Exploitation": "none"
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                    "Automatable": "no"
                  },
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                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-14T18:09:00.654409Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-14T18:09:15.335Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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          "defaultStatus": "unaffected",
          "platforms": [
            "Windows",
            "Android"
          ],
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          "vendor": "OpenVPN",
          "versions": [
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              "lessThanOrEqual": "2.7.7",
              "status": "affected",
              "version": "2.7_alpha3",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An integer underflow in OpenVPN version 2.7_alpha3 through 2.7.7 on Windows and Android allows remote authenticated servers to cause a denial of service or memory disclosure via crafted domain search options"
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
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              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
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          "descriptions": [
            {
              "cweId": "CWE-191",
              "description": "CWE-191 Integer underflow (wrap or wraparound)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-125",
              "description": "CWE-125 Out-of-bounds read",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
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        "dateUpdated": "2026-10-13T22:15:08.905Z",
        "orgId": "36a55730-e66d-4d39-8ca6-3c3b3017965e",
        "shortName": "OpenVPN"
      },
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          ],
          "url": "https://community.openvpn.net/Security%20Announcements/CVE-2026-88964"
        }
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    "assignerShortName": "OpenVPN",
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    "datePublished": "2026-10-13T22:15:08.905Z",
    "dateReserved": "2026-09-10T15:53:07.519Z",
    "dateUpdated": "2026-10-14T18:09:15.335Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-105390 (GCVE-0-2026-105390)

Vulnerability from nvd – Published: 2026-10-13 22:44 – Updated: 2026-10-14 18:08

Summary

Improper synchronization in the OpenVPN ovpn-dco-win for Windows versions 0.6.5 through 1.3.5 and 2.4.0 through 2.8.7 allows local attackers to trigger a deadlock via a crafted write to the ovpn-dco device, causing the host to become unresponsive.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-14 18:07 UTC

CWE

CWE-413 - Improper resource locking
CWE-833 - Deadlock

Assigner

OpenVPN CNA under the mitre root

CNA scorecard C 74/100 over 27 records in the last 180 days details

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	ovpn-dco-win	Affected: 0.6.5 , ≤ 1.3.5 (semver) Affected: 2.4.0 , ≤ 2.8.7 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-105390",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-14T18:07:58.275427Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
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          }
        ],
        "providerMetadata": {
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
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      }
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          "platforms": [
            "Windows"
          ],
          "product": "ovpn-dco-win",
          "vendor": "OpenVPN",
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              "status": "affected",
              "version": "0.6.5",
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              "lessThanOrEqual": "2.8.7",
              "status": "affected",
              "version": "2.4.0",
              "versionType": "semver"
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          ]
        }
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      "descriptions": [
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      ],
      "metrics": [
        {
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            "Recovery": "NOT_DEFINED",
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            "attackVector": "LOCAL",
            "baseScore": 6.9,
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            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
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          "scenarios": [
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              "lang": "en",
              "value": "GENERAL"
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              "lang": "en",
              "type": "CWE"
            }
          ]
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        {
          "descriptions": [
            {
              "cweId": "CWE-833",
              "description": "CWE-833 Deadlock",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
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        "dateUpdated": "2026-10-13T22:44:38.433Z",
        "orgId": "36a55730-e66d-4d39-8ca6-3c3b3017965e",
        "shortName": "OpenVPN"
      },
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    "dateReserved": "2026-10-05T10:34:02.496Z",
    "dateUpdated": "2026-10-14T18:08:12.000Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-84790 (GCVE-0-2026-84790)

Vulnerability from nvd – Published: 2026-10-13 21:39 – Updated: 2026-10-18 13:54

Summary

OpenVPN 2.7_alpha1 through 2.7.7 allows remote authenticated users to impersonate others via a crafted certificate subject field

Severity

7.6 (High)


                        
                          CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-18 13:38 UTC

CWE

CWE-290 - Authentication bypass by spoofing
CWE-158 - Improper neutralization of null byte or NUL character

Assigner

OpenVPN CNA under the mitre root

CNA scorecard C 74/100 over 27 records in the last 180 days details

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.7_alpha1 , ≤ 2.7.7 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-84790",
                "options": [
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                    "Exploitation": "none"
                  },
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                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-18T13:38:57.486997Z",
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          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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    ],
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          "defaultStatus": "unaffected",
          "product": "OpenVPN",
          "vendor": "OpenVPN",
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              "lessThanOrEqual": "2.7.7",
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              "versionType": "semver"
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          "lang": "en",
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        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "HIGH",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 7.6,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
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            "valueDensity": "NOT_DEFINED",
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            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
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              "value": "GENERAL"
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          "descriptions": [
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              "cweId": "CWE-290",
              "description": "CWE-290 Authentication bypass by spoofing",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-158",
              "description": "CWE-158 Improper neutralization of null byte or NUL character",
              "lang": "en",
              "type": "CWE"
            }
          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-13T21:45:48.244Z",
        "orgId": "36a55730-e66d-4d39-8ca6-3c3b3017965e",
        "shortName": "OpenVPN"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
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    "datePublished": "2026-10-13T21:39:05.221Z",
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  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-82325 (GCVE-0-2026-82325)

Vulnerability from nvd – Published: 2026-09-07 11:03 – Updated: 2026-09-08 15:08

Summary

A use-after-free vulnerability in the OpenVPN ovpn-dco-win driver version 2.5.0 through 2.8.6 allows local authenticated users to cause a system crash via crafted control messages

Severity

6.8 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 15:08 UTC

CWE

CWE-416 - Use after free
CWE-415 - Double free

Assigner

OpenVPN CNA under the mitre root

CNA scorecard C 74/100 over 27 records in the last 180 days details

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	ovpn-dco-win	Affected: 2.5.0 , ≤ 2.8.6 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-84732 (GCVE-0-2026-84732)

Vulnerability from nvd – Published: 2026-09-07 08:16 – Updated: 2026-09-08 15:01

Summary

Retransmissions of ACK packet ID in OpenVPN through 2.6.22 and 2.7.6 allow remote unauthenticated attackers to cause a denial of service via crafted inputs that trigger a timeout integer overflow

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 15:01 UTC

CWE

CWE-190 - Integer overflow or wraparound

Assigner

OpenVPN CNA under the mitre root

CNA scorecard C 74/100 over 27 records in the last 180 days details

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 0 , ≤ 2.6.22 (semver) Affected: 0 , ≤ 2.7.6 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-84256 (GCVE-0-2026-84256)

Vulnerability from nvd – Published: 2026-09-07 07:55 – Updated: 2026-10-13 22:25

Summary

An argument parsing issue in OpenVPN 2.1_rc10 through 2.6.22 and 2.7_alpha1 through 2.7.7 on Windows allows remote authenticated users to execute arbitrary commands via a crafted certificate subject

Severity

7.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 15:00 UTC

CWE

CWE-78 - Improper neutralization of special elements used in an OS command ('OS command injection')
CWE-88 - Improper neutralization of argument delimiters in a command ('argument injection')

Assigner

OpenVPN CNA under the mitre root

CNA scorecard C 74/100 over 27 records in the last 180 days details

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.1_rc10 , ≤ 2.6.22 (semver) Affected: 2.7_alpha1 , ≤ 2.7.7 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-84226 (GCVE-0-2026-84226)

Vulnerability from nvd – Published: 2026-09-07 07:47 – Updated: 2026-09-08 14:59

Summary

OpenVPN version 2.5.0 through 2.6.22 and 2.7_alpha1 through 2.7.6 on Windows allows local authenticated users to perform a binary planting attack during network configuration steps

Severity

8.5 (High)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 14:59 UTC

CWE

CWE-426 - Untrusted Search Path

Assigner

OpenVPN CNA under the mitre root

CNA scorecard C 74/100 over 27 records in the last 180 days details

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.5.0 , ≤ 2.6.22 (semver) Affected: 2.7_alpha1 , ≤ 2.7.6 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-82312 (GCVE-0-2026-82312)

Vulnerability from nvd – Published: 2026-09-07 07:40 – Updated: 2026-09-08 14:59

Summary

OpenVPN 2.0.0 through 2.6.22 and 2.7_alpha1 through 2.7.6 on Windows allows local authenticated users to cause a denial of service via a NULL DACL on named IPC objects

Severity

1.8 (Low)


                        
                          CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 14:57 UTC

CWE

CWE-732 - Incorrect Permission Assignment for Critical Resource
CWE-412 - Unrestricted externally accessible lock

Assigner

OpenVPN CNA under the mitre root

CNA scorecard C 74/100 over 27 records in the last 180 days details

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.0.0 , ≤ 2.6.22 (semver) Affected: 2.7_alpha1 , ≤ 2.7.6 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-81830 (GCVE-0-2026-81830)

Vulnerability from nvd – Published: 2026-09-07 07:36 – Updated: 2026-09-08 14:56

Summary

The Windows interactive service in OpenVPN 2.4.0 through 2.6.22 allows local authenticated users to bypass the trusted configuration directory constraint via incorrect file path validation

Severity

5.6 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 14:55 UTC

CWE

CWE-73 - External control of file name or path

Assigner

OpenVPN CNA under the mitre root

CNA scorecard C 74/100 over 27 records in the last 180 days details

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.4.0 , ≤ 2.6.22 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-81738 (GCVE-0-2026-81738)

Vulnerability from nvd – Published: 2026-09-07 07:32 – Updated: 2026-09-08 14:55

Summary

OpenVPN 2.5.0 through 2.7.6 on Windows using the tap-windows6 driver allows attackers to trigger an out-of-bounds write via crafted DOMAIN-SEARCH entries

Severity

2.3 (Low)


                        
                          CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:L/SA:L

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 14:54 UTC

CWE

CWE-121 - Stack-based buffer overflow
CWE-193 - Off-by-one error
CWE-787 - Out-of-bounds write

Assigner

OpenVPN CNA under the mitre root

CNA scorecard C 74/100 over 27 records in the last 180 days details

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.5.0 , ≤ 2.7.6 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-78221 (GCVE-0-2026-78221)

Vulnerability from nvd – Published: 2026-09-07 07:28 – Updated: 2026-09-08 14:54

Summary

An incorrect buffer size calculation in the Windows Interactive Service in OpenVPN 2.7_alpha1 through 2.7.6 allows local authenticated users to cause memory corruption or disclose sensitive information via crafted NRPT inputs.

Severity

5.9 (Medium)


                        
                          CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:H/VI:N/VA:H/SC:H/SI:N/SA:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 14:54 UTC

CWE

CWE-131 - Incorrect calculation of buffer size

Assigner

OpenVPN CNA under the mitre root

CNA scorecard C 74/100 over 27 records in the last 180 days details

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.7_alpha1 , ≤ 2.7.6 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-78043 (GCVE-0-2026-78043)

Vulnerability from nvd – Published: 2026-09-07 07:21 – Updated: 2026-09-08 14:54

Summary

The Windows Interactive Service in OpenVPN 2.7_alpha1 through 2.7.6 allows local authenticated users to bypass the trusted configuration directory constraint and load arbitrary configuration files via specially crafted paths

Severity

5.6 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 14:54 UTC

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

OpenVPN CNA under the mitre root

CNA scorecard C 74/100 over 27 records in the last 180 days details

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.7_alpha1 , ≤ 2.7.6 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-63650 (GCVE-0-2026-63650)

Vulnerability from nvd – Published: 2026-08-14 22:13 – Updated: 2026-08-17 15:38

Summary

OpenVPN 2.7_alpha1 through 2.7.5 using mbedTLS allows remote authenticated users to be misidentified by ignoring the configured X.509 username identity lookup field

Severity

2 (Low)


                        
                          CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-17 15:22 UTC

CWE

CWE-295 - Improper Certificate Validation
CWE-115 - Misinterpretation of Input

Assigner

OpenVPN CNA under the mitre root

CNA scorecard C 74/100 over 27 records in the last 180 days details

References

2 references

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory
https://community.openvpn.net/ReleaseHistory#open…	release-notes

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.7_alpha1 , < 2.7.6 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-63649 (GCVE-0-2026-63649)

Vulnerability from nvd – Published: 2026-08-14 22:13 – Updated: 2026-08-17 15:38

Summary

The Windows interactive service in OpenVPN 2.4.0 through 2.6.21 and 2.7_alpha1 through 2.7.5 allows local authenticated users to bypass the trusted configuration directory constraint and load arbitrary configuration files via crafted options that bypass whitelist checks

Severity

4.1 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-17 15:22 UTC

CWE

CWE-183 - Permissive list of allowed inputs

Assigner

OpenVPN CNA under the mitre root

CNA scorecard C 74/100 over 27 records in the last 180 days details

References

3 references

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory
https://community.openvpn.net/ReleaseHistory#open…	release-notes
https://community.openvpn.net/ReleaseHistory#open…	release-notes

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.4.0 , < 2.6.22 (semver) Affected: 2.7_alpha1 , < 2.7.6 (semver)

Date Public

2026-07-29 16:00

Show details on NVD website

JSON

To clipboard

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CVE-2026-84471 (GCVE-0-2026-84471)

Vulnerability from cvelistv5 – Published: 2026-10-14 14:29 – Updated: 2026-10-16 15:31

Summary

The fix for CVE-2026-12996 was incomplete. A use-after-free in OpenVPN 2.6.0 through 2.6.22 and 2.7_alpha1 through 2.7.7 allows remote authenticated peers to potentially cause a denial of service or leak memory via crafted packets during TLS session promotion or expiry.

Severity

7.2 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-16 15:17 UTC

CWE

CWE-416 - Use after free

Assigner

OpenVPN CNA under the mitre root

CNA scorecard C 74/100 over 27 records in the last 180 days details

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.6.0 , ≤ 2.6.22 (semver) Affected: 2.7_alpha1 , ≤ 2.7.7 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-105390 (GCVE-0-2026-105390)

Vulnerability from cvelistv5 – Published: 2026-10-13 22:44 – Updated: 2026-10-14 18:08

Summary

Improper synchronization in the OpenVPN ovpn-dco-win for Windows versions 0.6.5 through 1.3.5 and 2.4.0 through 2.8.7 allows local attackers to trigger a deadlock via a crafted write to the ovpn-dco device, causing the host to become unresponsive.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-14 18:07 UTC

CWE

CWE-413 - Improper resource locking
CWE-833 - Deadlock

Assigner

OpenVPN CNA under the mitre root

CNA scorecard C 74/100 over 27 records in the last 180 days details

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	ovpn-dco-win	Affected: 0.6.5 , ≤ 1.3.5 (semver) Affected: 2.4.0 , ≤ 2.8.7 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-88964 (GCVE-0-2026-88964)

Vulnerability from cvelistv5 – Published: 2026-10-13 22:15 – Updated: 2026-10-14 18:09

Summary

An integer underflow in OpenVPN version 2.7_alpha3 through 2.7.7 on Windows and Android allows remote authenticated servers to cause a denial of service or memory disclosure via crafted domain search options

Severity

7.1 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-14 18:09 UTC

CWE

CWE-191 - Integer underflow (wrap or wraparound)
CWE-125 - Out-of-bounds read

Assigner

OpenVPN CNA under the mitre root

CNA scorecard C 74/100 over 27 records in the last 180 days details

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.7_alpha3 , ≤ 2.7.7 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-84790 (GCVE-0-2026-84790)

Vulnerability from cvelistv5 – Published: 2026-10-13 21:39 – Updated: 2026-10-18 13:54

Summary

OpenVPN 2.7_alpha1 through 2.7.7 allows remote authenticated users to impersonate others via a crafted certificate subject field

Severity

7.6 (High)


                        
                          CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-18 13:38 UTC

CWE

CWE-290 - Authentication bypass by spoofing
CWE-158 - Improper neutralization of null byte or NUL character

Assigner

OpenVPN CNA under the mitre root

CNA scorecard C 74/100 over 27 records in the last 180 days details

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.7_alpha1 , ≤ 2.7.7 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-82325 (GCVE-0-2026-82325)

Vulnerability from cvelistv5 – Published: 2026-09-07 11:03 – Updated: 2026-09-08 15:08

Summary

A use-after-free vulnerability in the OpenVPN ovpn-dco-win driver version 2.5.0 through 2.8.6 allows local authenticated users to cause a system crash via crafted control messages

Severity

6.8 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 15:08 UTC

CWE

CWE-416 - Use after free
CWE-415 - Double free

Assigner

OpenVPN CNA under the mitre root

CNA scorecard C 74/100 over 27 records in the last 180 days details

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	ovpn-dco-win	Affected: 2.5.0 , ≤ 2.8.6 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-84732 (GCVE-0-2026-84732)

Vulnerability from cvelistv5 – Published: 2026-09-07 08:16 – Updated: 2026-09-08 15:01

Summary

Retransmissions of ACK packet ID in OpenVPN through 2.6.22 and 2.7.6 allow remote unauthenticated attackers to cause a denial of service via crafted inputs that trigger a timeout integer overflow

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 15:01 UTC

CWE

CWE-190 - Integer overflow or wraparound

Assigner

OpenVPN CNA under the mitre root

CNA scorecard C 74/100 over 27 records in the last 180 days details

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 0 , ≤ 2.6.22 (semver) Affected: 0 , ≤ 2.7.6 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-84256 (GCVE-0-2026-84256)

Vulnerability from cvelistv5 – Published: 2026-09-07 07:55 – Updated: 2026-10-13 22:25

Summary

An argument parsing issue in OpenVPN 2.1_rc10 through 2.6.22 and 2.7_alpha1 through 2.7.7 on Windows allows remote authenticated users to execute arbitrary commands via a crafted certificate subject

Severity

7.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 15:00 UTC

CWE

CWE-78 - Improper neutralization of special elements used in an OS command ('OS command injection')
CWE-88 - Improper neutralization of argument delimiters in a command ('argument injection')

Assigner

OpenVPN CNA under the mitre root

CNA scorecard C 74/100 over 27 records in the last 180 days details

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.1_rc10 , ≤ 2.6.22 (semver) Affected: 2.7_alpha1 , ≤ 2.7.7 (semver)

Show details on NVD website

JSON

To clipboard

{
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                "id": "CVE-2026-84256",
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CVE-2026-84226 (GCVE-0-2026-84226)

Vulnerability from cvelistv5 – Published: 2026-09-07 07:47 – Updated: 2026-09-08 14:59

Summary

OpenVPN version 2.5.0 through 2.6.22 and 2.7_alpha1 through 2.7.6 on Windows allows local authenticated users to perform a binary planting attack during network configuration steps

Severity

8.5 (High)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 14:59 UTC

CWE

CWE-426 - Untrusted Search Path

Assigner

OpenVPN CNA under the mitre root

CNA scorecard C 74/100 over 27 records in the last 180 days details

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.5.0 , ≤ 2.6.22 (semver) Affected: 2.7_alpha1 , ≤ 2.7.6 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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CVE-2026-82312 (GCVE-0-2026-82312)

Vulnerability from cvelistv5 – Published: 2026-09-07 07:40 – Updated: 2026-09-08 14:59

Summary

OpenVPN 2.0.0 through 2.6.22 and 2.7_alpha1 through 2.7.6 on Windows allows local authenticated users to cause a denial of service via a NULL DACL on named IPC objects

Severity

1.8 (Low)


                        
                          CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 14:57 UTC

CWE

CWE-732 - Incorrect Permission Assignment for Critical Resource
CWE-412 - Unrestricted externally accessible lock

Assigner

OpenVPN CNA under the mitre root

CNA scorecard C 74/100 over 27 records in the last 180 days details

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.0.0 , ≤ 2.6.22 (semver) Affected: 2.7_alpha1 , ≤ 2.7.6 (semver)

Show details on NVD website

JSON

To clipboard

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        "metrics": [
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CVE-2026-81830 (GCVE-0-2026-81830)

Vulnerability from cvelistv5 – Published: 2026-09-07 07:36 – Updated: 2026-09-08 14:56

Summary

The Windows interactive service in OpenVPN 2.4.0 through 2.6.22 allows local authenticated users to bypass the trusted configuration directory constraint via incorrect file path validation

Severity

5.6 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 14:55 UTC

CWE

CWE-73 - External control of file name or path

Assigner

OpenVPN CNA under the mitre root

CNA scorecard C 74/100 over 27 records in the last 180 days details

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.4.0 , ≤ 2.6.22 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-81738 (GCVE-0-2026-81738)

Vulnerability from cvelistv5 – Published: 2026-09-07 07:32 – Updated: 2026-09-08 14:55

Summary

OpenVPN 2.5.0 through 2.7.6 on Windows using the tap-windows6 driver allows attackers to trigger an out-of-bounds write via crafted DOMAIN-SEARCH entries

Severity

2.3 (Low)


                        
                          CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:L/SA:L

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 14:54 UTC

CWE

CWE-121 - Stack-based buffer overflow
CWE-193 - Off-by-one error
CWE-787 - Out-of-bounds write

Assigner

OpenVPN CNA under the mitre root

CNA scorecard C 74/100 over 27 records in the last 180 days details

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.5.0 , ≤ 2.7.6 (semver)

Show details on NVD website

JSON

To clipboard

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  "containers": {
    "adp": [
      {
        "metrics": [
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CVE-2026-78221 (GCVE-0-2026-78221)

Vulnerability from cvelistv5 – Published: 2026-09-07 07:28 – Updated: 2026-09-08 14:54

Summary

An incorrect buffer size calculation in the Windows Interactive Service in OpenVPN 2.7_alpha1 through 2.7.6 allows local authenticated users to cause memory corruption or disclose sensitive information via crafted NRPT inputs.

Severity

5.9 (Medium)


                        
                          CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:H/VI:N/VA:H/SC:H/SI:N/SA:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 14:54 UTC

CWE

CWE-131 - Incorrect calculation of buffer size

Assigner

OpenVPN CNA under the mitre root

CNA scorecard C 74/100 over 27 records in the last 180 days details

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.7_alpha1 , ≤ 2.7.6 (semver)

Show details on NVD website

JSON

To clipboard

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        "metrics": [
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CVE-2026-78043 (GCVE-0-2026-78043)

Vulnerability from cvelistv5 – Published: 2026-09-07 07:21 – Updated: 2026-09-08 14:54

Summary

The Windows Interactive Service in OpenVPN 2.7_alpha1 through 2.7.6 allows local authenticated users to bypass the trusted configuration directory constraint and load arbitrary configuration files via specially crafted paths

Severity

5.6 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 14:54 UTC

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

OpenVPN CNA under the mitre root

CNA scorecard C 74/100 over 27 records in the last 180 days details

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.7_alpha1 , ≤ 2.7.6 (semver)

Show details on NVD website

JSON

To clipboard

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    "adp": [
      {
        "metrics": [
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CVE-2026-63650 (GCVE-0-2026-63650)

Vulnerability from cvelistv5 – Published: 2026-08-14 22:13 – Updated: 2026-08-17 15:38

Summary

OpenVPN 2.7_alpha1 through 2.7.5 using mbedTLS allows remote authenticated users to be misidentified by ignoring the configured X.509 username identity lookup field

Severity

2 (Low)


                        
                          CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-17 15:22 UTC

CWE

CWE-295 - Improper Certificate Validation
CWE-115 - Misinterpretation of Input

Assigner

OpenVPN CNA under the mitre root

CNA scorecard C 74/100 over 27 records in the last 180 days details

References

2 references

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory
https://community.openvpn.net/ReleaseHistory#open…	release-notes

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.7_alpha1 , < 2.7.6 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-63649 (GCVE-0-2026-63649)

Vulnerability from cvelistv5 – Published: 2026-08-14 22:13 – Updated: 2026-08-17 15:38

Summary

The Windows interactive service in OpenVPN 2.4.0 through 2.6.21 and 2.7_alpha1 through 2.7.5 allows local authenticated users to bypass the trusted configuration directory constraint and load arbitrary configuration files via crafted options that bypass whitelist checks

Severity

4.1 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-17 15:22 UTC

CWE

CWE-183 - Permissive list of allowed inputs

Assigner

OpenVPN CNA under the mitre root

CNA scorecard C 74/100 over 27 records in the last 180 days details

References

3 references

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory
https://community.openvpn.net/ReleaseHistory#open…	release-notes
https://community.openvpn.net/ReleaseHistory#open…	release-notes

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.4.0 , < 2.6.22 (semver) Affected: 2.7_alpha1 , < 2.7.6 (semver)

Date Public

2026-07-29 16:00

Show details on NVD website

JSON

To clipboard

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        {
          "lang": "en",
          "value": "The Windows interactive service in OpenVPN 2.4.0 through 2.6.21 and 2.7_alpha1 through 2.7.5 allows local authenticated users to bypass the trusted configuration directory constraint and load arbitrary configuration files via crafted options that bypass whitelist checks"
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 4.1,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "HIGH",
            "subIntegrityImpact": "NONE",
            "userInteraction": "ACTIVE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-183",
              "description": "CWE-183 Permissive list of allowed inputs",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-14T22:13:21.590Z",
        "orgId": "36a55730-e66d-4d39-8ca6-3c3b3017965e",
        "shortName": "OpenVPN"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://community.openvpn.net/Security%20Announcements/CVE-2026-63649"
        },
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://community.openvpn.net/ReleaseHistory#openvpn-276-released-5-august-2026"
        },
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://community.openvpn.net/ReleaseHistory#openvpn-2622-released-5-august-2026"
        }
      ],
      "x_generator": {
        "engine": "cvelib 1.8.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "36a55730-e66d-4d39-8ca6-3c3b3017965e",
    "assignerShortName": "OpenVPN",
    "cveId": "CVE-2026-63649",
    "datePublished": "2026-08-14T22:13:21.590Z",
    "dateReserved": "2026-07-17T14:38:48.698Z",
    "dateUpdated": "2026-08-17T15:38:37.331Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Find a vulnerability

Search criteria

268 vulnerabilities by openvpn

CVE-2026-84471 (GCVE-0-2026-84471)

CVE-2026-88964 (GCVE-0-2026-88964)

CVE-2026-105390 (GCVE-0-2026-105390)

CVE-2026-84790 (GCVE-0-2026-84790)

CVE-2026-82325 (GCVE-0-2026-82325)

CVE-2026-84732 (GCVE-0-2026-84732)

CVE-2026-84256 (GCVE-0-2026-84256)

CVE-2026-84226 (GCVE-0-2026-84226)

CVE-2026-82312 (GCVE-0-2026-82312)

CVE-2026-81830 (GCVE-0-2026-81830)

CVE-2026-81738 (GCVE-0-2026-81738)

CVE-2026-78221 (GCVE-0-2026-78221)

CVE-2026-78043 (GCVE-0-2026-78043)

CVE-2026-63650 (GCVE-0-2026-63650)

CVE-2026-63649 (GCVE-0-2026-63649)

CVE-2026-84471 (GCVE-0-2026-84471)

CVE-2026-105390 (GCVE-0-2026-105390)

CVE-2026-88964 (GCVE-0-2026-88964)

CVE-2026-84790 (GCVE-0-2026-84790)

CVE-2026-82325 (GCVE-0-2026-82325)

CVE-2026-84732 (GCVE-0-2026-84732)

CVE-2026-84256 (GCVE-0-2026-84256)

CVE-2026-84226 (GCVE-0-2026-84226)

CVE-2026-82312 (GCVE-0-2026-82312)

CVE-2026-81830 (GCVE-0-2026-81830)

CVE-2026-81738 (GCVE-0-2026-81738)

CVE-2026-78221 (GCVE-0-2026-78221)

CVE-2026-78043 (GCVE-0-2026-78043)

CVE-2026-63650 (GCVE-0-2026-63650)

CVE-2026-63649 (GCVE-0-2026-63649)