usn-8286-1
Vulnerability from osv_ubuntu
Published
2026-05-20 13:16
Modified
2026-06-09 19:00
Summary
openvpn vulnerabilities
Details

Guannan Wang, Zhanpeng Liu, Guancheng Li, and Emma Reuter discovered that OpenVPN incorrectly handled suitably malformed packets with valid tls-crypt-v2 keys. An attacker could possibly use this issue to cause OpenVPN to crash, resulting in a denial of service. (CVE-2026-35058)

Guannan Wang, Zhanpeng Liu, and Guancheng Li discovered that OpenVPN had a race condition in the TLS handshake process that could leak packet data from a previous handshake under certain circumstances. An attacker could possibly use this issue to obtain sensitive information. (CVE-2026-40215)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-35058",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H",
                  "type": "CVSS_V4"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-40215",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:N/VA:H/SC:L/SI:N/SA:L",
                  "type": "CVSS_V4"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:22.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "openvpn",
            "binary_version": "2.5.11-0ubuntu0.22.04.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "openvpn",
        "purl": "pkg:deb/ubuntu/openvpn@2.5.11-0ubuntu0.22.04.3?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.5.11-0ubuntu0.22.04.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.5.1-3ubuntu1",
        "2.5.1-3ubuntu2",
        "2.5.1-3ubuntu4",
        "2.5.1-3ubuntu5",
        "2.5.5-1ubuntu1",
        "2.5.5-1ubuntu3",
        "2.5.5-1ubuntu3.1",
        "2.5.9-0ubuntu0.22.04.2",
        "2.5.9-0ubuntu0.22.04.3",
        "2.5.11-0ubuntu0.22.04.1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-35058",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H",
                  "type": "CVSS_V4"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-40215",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:N/VA:H/SC:L/SI:N/SA:L",
                  "type": "CVSS_V4"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:24.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "openvpn",
            "binary_version": "2.6.19-0ubuntu0.24.04.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "openvpn",
        "purl": "pkg:deb/ubuntu/openvpn@2.6.19-0ubuntu0.24.04.2?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.6.19-0ubuntu0.24.04.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.6.5-0ubuntu1",
        "2.6.7-1ubuntu1",
        "2.6.9-1ubuntu2",
        "2.6.9-1ubuntu3",
        "2.6.9-1ubuntu4",
        "2.6.9-1ubuntu4.1",
        "2.6.12-0ubuntu0.24.04.1",
        "2.6.12-0ubuntu0.24.04.3",
        "2.6.14-0ubuntu0.24.04.1",
        "2.6.14-0ubuntu0.24.04.2",
        "2.6.14-0ubuntu0.24.04.3",
        "2.6.19-0ubuntu0.24.04.1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-35058",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H",
                  "type": "CVSS_V4"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-40215",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:N/VA:H/SC:L/SI:N/SA:L",
                  "type": "CVSS_V4"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:25.10"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "openvpn",
            "binary_version": "2.6.19-0ubuntu0.25.10.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "openvpn",
        "purl": "pkg:deb/ubuntu/openvpn@2.6.19-0ubuntu0.25.10.2?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.6.19-0ubuntu0.25.10.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.6.13-1ubuntu3",
        "2.6.14-1ubuntu1",
        "2.6.14-2ubuntu1",
        "2.6.14-2ubuntu1.1",
        "2.6.19-0ubuntu0.25.10.1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-35058",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H",
                  "type": "CVSS_V4"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-40215",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:N/VA:H/SC:L/SI:N/SA:L",
                  "type": "CVSS_V4"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:26.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "openvpn",
            "binary_version": "2.7.0-1ubuntu1.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "openvpn",
        "purl": "pkg:deb/ubuntu/openvpn@2.7.0-1ubuntu1.1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.7.0-1ubuntu1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.6.14-2ubuntu1",
        "2.6.15-1ubuntu1",
        "2.7.0~rc5-1ubuntu5",
        "2.7.0~rc6-1ubuntu1",
        "2.7.0-1ubuntu1"
      ]
    }
  ],
  "aliases": [],
  "details": "Guannan Wang, Zhanpeng Liu, Guancheng Li, and Emma Reuter\ndiscovered that OpenVPN incorrectly handled suitably malformed\npackets with valid tls-crypt-v2 keys. An attacker could possibly use\nthis issue to cause OpenVPN to crash, resulting in a denial of\nservice. (CVE-2026-35058)\n\nGuannan Wang, Zhanpeng Liu, and Guancheng Li discovered that\nOpenVPN had a race condition in the TLS handshake process that could\nleak packet data from a previous handshake under certain\ncircumstances. An attacker could possibly use this issue to obtain\nsensitive information. (CVE-2026-40215)",
  "id": "USN-8286-1",
  "modified": "2026-06-09T19:00:58Z",
  "published": "2026-05-20T13:16:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8286-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-35058"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-40215"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "openvpn vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2026-35058",
    "UBUNTU-CVE-2026-40215"
  ]
}



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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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