{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-10T08:10:24.413","vulnerabilities":[{"cve":{"id":"CVE-2020-11810","sourceIdentifier":"cve@mitre.org","published":"2020-04-27T15:15:12.407","lastModified":"2024-11-21T04:58:40.587","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"An issue was discovered in OpenVPN 2.4.x before 2.4.9. An attacker can inject a data channel v2 (P_DATA_V2) packet using a victim's peer-id. Normally such packets are dropped, but if this packet arrives before the data channel crypto parameters have been initialized, the victim's connection will be dropped. This requires careful timing due to the small time window (usually within a few seconds) between the victim client connection starting and the server PUSH_REPLY response back to the client. This attack will only work if Negotiable Cipher Parameters (NCP) is in use."},{"lang":"es","value":"Se detectó un problema en OpenVPN versiones 2.4.x versiones anteriores a 2.4.9. Un atacante puede inyectar un paquete de canal de datos v2 (P_DATA_V2) usando el peer-id de la víctima. Normalmente, estos paquetes son eliminados, pero si este paquete llega antes de que se hayan inicializado los parámetros de cifrado del canal de datos, se eliminará la conexión de la víctima. Esto requiere una sincronización cuidadosa debido a una pequeña ventana de tiempo (normalmente unos pocos segundos) entre el inicio de la conexión del cliente víctima y la respuesta PUSH_REPLY del servidor al cliente. Este ataque sólo funcionará si Negotiable Cipher Parameters (NCP) está en uso."}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","baseScore":3.7,"baseSeverity":"LOW","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW"},"exploitabilityScore":2.2,"impactScore":1.4}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:N/I:N/A:P","baseScore":4.3,"accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL"},"baseSeverity":"MEDIUM","exploitabilityScore":8.6,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-362"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:openvpn:openvpn:*:*:*:*:*:*:*:*","versionStartIncluding":"2.4.0","versionEndExcluding":"2.4.9","matchCriteriaId":"3D4C2FC1-8BC0-4588-85C3-FC6D3B84D3F6"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*","matchCriteriaId":"C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43"},{"vulnerable":true,"criteria":"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*","matchCriteriaId":"DEECE5FC-CACF-4496-A3E7-164736409252"},{"vulnerable":true,"criteria":"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*","matchCriteriaId":"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*","matchCriteriaId":"97A4B8DF-58DA-4AB6-A1F9-331B36409BA3"},{"vulnerable":true,"criteria":"cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*","matchCriteriaId":"36D96259-24BD-44E2-96D9-78CE1D41F956"}]}]}],"references":[{"url":"https://bugzilla.suse.com/show_bug.cgi?id=1169925","source":"cve@mitre.org","tags":["Issue Tracking","Third Party Advisory"]},{"url":"https://community.openvpn.net/openvpn/ticket/1272","source":"cve@mitre.org","tags":["Exploit","Vendor Advisory"]},{"url":"https://github.com/OpenVPN/openvpn/commit/37bc691e7d26ea4eb61a8a434ebd7a9ae76225ab","source":"cve@mitre.org","tags":["Patch","Third Party Advisory"]},{"url":"https://lists.debian.org/debian-lts-announce/2022/05/msg00002.html","source":"cve@mitre.org","tags":["Mailing List","Third Party Advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FGHHV4YZANZW45KZTJJGVGPFMSXYRCKZ/","source":"cve@mitre.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JII7RYYYRBPQNEGGVSOXCM7JUZ43T3VH/","source":"cve@mitre.org"},{"url":"https://patchwork.openvpn.net/patch/1079/","source":"cve@mitre.org","tags":["Patch","Vendor Advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-11810","source":"cve@mitre.org","tags":["Third Party Advisory"]},{"url":"https://bugzilla.suse.com/show_bug.cgi?id=1169925","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking","Third Party Advisory"]},{"url":"https://community.openvpn.net/openvpn/ticket/1272","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Vendor Advisory"]},{"url":"https://github.com/OpenVPN/openvpn/commit/37bc691e7d26ea4eb61a8a434ebd7a9ae76225ab","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Third Party Advisory"]},{"url":"https://lists.debian.org/debian-lts-announce/2022/05/msg00002.html","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Third Party Advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FGHHV4YZANZW45KZTJJGVGPFMSXYRCKZ/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JII7RYYYRBPQNEGGVSOXCM7JUZ43T3VH/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://patchwork.openvpn.net/patch/1079/","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Vendor Advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-11810","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]}]}}]}