{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-19T08:50:19.932","vulnerabilities":[{"cve":{"id":"CVE-2021-0236","sourceIdentifier":"sirt@juniper.net","published":"2021-04-22T20:15:08.843","lastModified":"2024-11-21T05:42:16.330","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"Due to an improper check for unusual or exceptional conditions in Juniper Networks Junos OS and Junos OS Evolved the Routing Protocol Daemon (RPD) service, upon receipt of a specific matching BGP packet meeting a specific term in the flowspec configuration, crashes and restarts causing a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue affects only Multiprotocol BGP (MP-BGP) VPNv6 FlowSpec deployments. This issue affects: Juniper Networks Junos OS: 18.4 versions prior to 18.4R1-S8, 18.4R2-S7, 18.4R3-S7; 19.1 versions prior to 19.1R2-S2, 19.1R3-S4; 19.2 versions prior to 19.2R1-S6, 19.2R3-S2; 19.3 versions prior to 19.3R3-S2; 19.4 versions prior to 19.4R2-S4, 19.4R3-S1; 20.1 versions prior to 20.1R2, 20.1R3; 20.2 versions prior to 20.2R2, 20.2R3; 20.3 versions prior to 20.3R1-S1, 20.3R2. Juniper Networks Junos OS Evolved: All versions after 18.4R1-EVO prior to 20.3R2-EVO. This issue does not affect: Juniper Networks Junos OS versions prior to 18.4R1. Juniper Networks Junos OS Evolved versions prior to 18.4R1-EVO."},{"lang":"es","value":"Debido a una comprobación inapropiada de condiciones inusuales o excepcionales en Juniper Networks Junos OS y  Junos OS Evolved, el Routing Protocol Daemon (RPD), al recibir un paquete BGP específico que coincide con un término específico en la configuración de flowpec, se bloquea y se reinicia causando una Denegación de Servicio (DoS). La recepción y el procesamiento continuo de este paquete crearán una condición sostenida de Denegación de Servicio (DoS). Este problema afecta solo a las implementaciones Multiprotocol BGP (MP-BGP) VPNv6 FlowSpec. Este problema afecta a: Juniper Networks Junos OS: versiones 18.4 anteriores a 18.4R1-S8, 18.4R2-S7, 18.4R3-S7; versiones 19.1 anteriores a 19.1R2-S2, 19.1R3-S4; versiones 19.2  anteriores a 19.2R1-S6, 19.2R3-S2; versiones 19.3 anteriores a 19.3R3-S2; versiones 19.4 anteriores a 19.4R2-S4, 19.4R3-S1; versiones 20.1 anteriores a 20.1R2, 20.1R3; versiones 20.2 anteriores a 20.2R2, 20.2R3; versiones 20. 3 anteriores a 20.3R1-S1, 20.3R2. Juniper Networks Junos OS Evolved: todas las versiones posteriores a 18.4R1-EVO anteriores a 20.3R2-EVO. Este problema no afecta a: Juniper Networks Junos OS versiones anteriores a 18.4R1. Juniper Networks Junos OS Evolved versiones anteriores a 18.4R1-EVO"}],"metrics":{"cvssMetricV31":[{"source":"sirt@juniper.net","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":3.6}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:S/C:N/I:N/A:C","baseScore":6.8,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"SINGLE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"COMPLETE"},"baseSeverity":"MEDIUM","exploitabilityScore":8.0,"impactScore":6.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"sirt@juniper.net","type":"Secondary","description":[{"lang":"en","value":"CWE-754"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-754"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.4:-:*:*:*:*:*:*","matchCriteriaId":"74CA9010-D3DE-487B-B46F-589A48AB0F0A"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.4:r1:*:*:*:*:*:*","matchCriteriaId":"A38F224C-8E9B-44F3-9D4F-6C9F04F57927"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.4:r1-s1:*:*:*:*:*:*","matchCriteriaId":"853F146A-9A0F-49B6-AFD2-9907434212F1"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.4:r1-s2:*:*:*:*:*:*","matchCriteriaId":"8F73B88B-E66C-4ACD-B38D-9365FB230ABA"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.4:r1-s3:*:*:*:*:*:*","matchCriteriaId":"EE1F82EC-3222-4158-8923-59CDA1909A9C"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.4:r1-s4:*:*:*:*:*:*","matchCriteriaId":"8FE95D15-B5E5-4E74-9464-C72D8B646A6B"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.4:r1-s5:*:*:*:*:*:*","matchCriteriaId":"C012CD07-706A-4E1C-B399-C55AEF5C8309"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.4:r1-s6:*:*:*:*:*:*","matchCriteriaId":"A0C26E59-874A-4D87-9E7F-E366F4D65ED1"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.4:r1-s7:*:*:*:*:*:*","matchCriteriaId":"75902119-60D0-49F8-8E01-666E0F75935A"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.4:r2:*:*:*:*:*:*","matchCriteriaId":"D59D7A31-128B-4034-862B-8EF3CE3EE949"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.4:r2-s1:*:*:*:*:*:*","matchCriteriaId":"0C5E097B-B79E-4E6A-9291-C8CB9674FED5"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.4:r2-s2:*:*:*:*:*:*","matchCriteriaId":"819FA3ED-F934-4B20-BC0E-D638ACCB7787"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.4:r2-s3:*:*:*:*:*:*","matchCriteriaId":"3D7D773A-4988-4D7C-A105-1885EBE14426"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.4:r2-s4:*:*:*:*:*:*","matchCriteriaId":"1BD93674-9375-493E-BD6C-8AD41CC75DD4"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.4:r2-s5:*:*:*:*:*:*","matchCriteriaId":"34E28FD9-1089-42F7-8586-876DBEC965DE"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.4:r2-s6:*:*:*:*:*:*","matchCriteriaId":"B7E72C49-1849-4A6F-81BC-D03F06D47D6D"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.4:r3:*:*:*:*:*:*","matchCriteriaId":"736B7A9F-E237-45AF-A6D6-84412475F481"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.4:r3-s1:*:*:*:*:*:*","matchCriteriaId":"62E63730-F697-4FE6-936B-FD9B4F22EAE8"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.4:r3-s2:*:*:*:*:*:*","matchCriteriaId":"064A7052-4EF5-4BFB-88FF-8122AEECB6A7"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.4:r3-s3:*:*:*:*:*:*","matchCriteriaId":"08C58CCB-3BAA-4400-B371-556DF46DE69C"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.4:r3-s4:*:*:*:*:*:*","matchCriteriaId":"28F7740D-C636-4FA3-8479-E5E039041DA6"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.4:r3-s5:*:*:*:*:*:*","matchCriteriaId":"81F6DEA3-F07E-4FD0-87CB-4E8C0B768706"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.4:r3-s6:*:*:*:*:*:*","matchCriteriaId":"2C1601BB-CAB7-4C92-8416-1824BB85D820"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.1:-:*:*:*:*:*:*","matchCriteriaId":"768C0EB7-8456-4BF4-8598-3401A54D21DA"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.1:r1:*:*:*:*:*:*","matchCriteriaId":"5332B70A-F6B0-4C3B-90E2-5CBFB3326126"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.1:r1-s1:*:*:*:*:*:*","matchCriteriaId":"81439FE8-5405-45C2-BC04-9823D2009A77"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.1:r1-s2:*:*:*:*:*:*","matchCriteriaId":"E506138D-043E-485D-B485-94A2AB75F8E7"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos: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