{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-08T01:18:14.767","vulnerabilities":[{"cve":{"id":"CVE-2021-0270","sourceIdentifier":"sirt@juniper.net","published":"2021-04-22T20:15:10.017","lastModified":"2024-11-21T05:42:22.033","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"On PTX Series and QFX10k Series devices with the \"inline-jflow\" feature enabled, a use after free weakness in the Packet Forwarding Engine (PFE) microkernel architecture of Juniper Networks Junos OS may allow an attacker to cause a Denial of Service (DoS) condition whereby one or more Flexible PIC Concentrators (FPCs) may restart. As this is a race condition situation this issue become more likely to be hit when network instability occurs, such as but not limited to BGP/IGP reconvergences, and/or further likely to occur when more active \"traffic flows\" are occurring through the device. When this issue occurs, it will cause one or more FPCs to restart unexpectedly. During FPC restarts core files will be generated. While the core file is generated traffic will be disrupted. Sustained receipt of large traffic flows and reconvergence-like situations may sustain the Denial of Service (DoS) situation. This issue affects: Juniper Networks Junos OS: 18.1 version 18.1R2 and later versions prior to 18.1R3-S10 on PTX Series, QFX10K Series."},{"lang":"es","value":"En los dispositivos de la serie PTX y la serie QFX10k con la funcionalidad \"inline-jflow\" habilitada, un uso de la memoria previamente liberada  en la arquitectura de microkernel de Packet Forwarding Engine (PFE) de Juniper Networks, puede permitir a un atacante causar una Denegación de Servicio (DoS) condición por la cual uno o más Flexible PIC Concentrators (FPCs) pueden reiniciarse. Como se trata de una situación de condición de carrera, es más probable que ocurra este problema cuando se produce una inestabilidad de la red, como, entre otros, las reconvergencias de BGP/IGP, y/o es más probable que ocurra cuando se produzcan \"traffic flows\" más activos por medio del dispositivo. Cuando este problema ocurre, causará uno o más FPC se reiniciarán inesperadamente. Durante los reinicios de FPC, se generarán archivos core. Mientras se genera el archivo principal, el tráfico estará interrumpido. La recepción sostenida de grandes flujos de tráfico y situaciones similares a la reconvergencia pueden sustentar la situación de Denegación de Servicio (DoS). Este problema afecta a: Juniper Networks Junos OS: versiones 18.1 18.1R2 y posteriores versiones anteriores a 18.1R3-S10 en la serie PTX, serie QFX10K"}],"metrics":{"cvssMetricV31":[{"source":"sirt@juniper.net","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6},{"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:H","baseScore":5.9,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":2.2,"impactScore":3.6}],"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":"sirt@juniper.net","type":"Secondary","description":[{"lang":"en","value":"CWE-362"},{"lang":"en","value":"CWE-416"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-362"},{"lang":"en","value":"CWE-416"}]}],"configurations":[{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.1:r2:*:*:*:*:*:*","matchCriteriaId":"2EF6F4C1-6A7E-474F-89BC-7A3C50FD8CAC"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.1:r2-s1:*:*:*:*:*:*","matchCriteriaId":"84F5BCBA-404B-4BC9-B363-CE6D231B0D6D"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.1:r2-s2:*:*:*:*:*:*","matchCriteriaId":"18A4CA3E-DA61-49CC-8476-3A476CCB2B83"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.1:r2-s4:*:*:*:*:*:*","matchCriteriaId":"A7380B3E-09F5-4497-86C6-11EF56BD89F1"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.1:r3:*:*:*:*:*:*","matchCriteriaId":"658841A9-BEC9-433E-81D0-47DE82887C4F"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.1:r3-s1:*:*:*:*:*:*","matchCriteriaId":"5AD05209-1274-4F8A-9FA2-A1A8DFCC5755"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.1:r3-s2:*:*:*:*:*:*","matchCriteriaId":"C97683B3-A07B-428F-9535-C49B55305679"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.1:r3-s3:*:*:*:*:*:*","matchCriteriaId":"A14CE132-C56B-43D8-A248-AB6A2D1A7B6C"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.1:r3-s4:*:*:*:*:*:*","matchCriteriaId":"73978DD8-BD92-4872-8F35-AF2B9BCA1ECB"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.1:r3-s5:*:*:*:*:*:*","matchCriteriaId":"678F57D1-2595-4AF3-BB87-AF2E1FE3CBB9"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.1:r3-s6:*:*:*:*:*:*","matchCriteriaId":"7988CE92-71D2-4EEC-B596-4A60E2C1136A"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.1:r3-s7:*:*:*:*:*:*","matchCriteriaId":"330D176F-8DAD-440C-A623-44FA233FAB01"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.1:r3-s8:*:*:*:*:*:*","matchCriteriaId":"8CC5EAB8-1364-4325-9F01-BE7CC479C29D"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.1:r3-s9:*:*:*:*:*:*","matchCriteriaId":"4E2E933A-852F-4257-860D-09638EE0D2F3"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:juniper:ptx1000:-:*:*:*:*:*:*:*","matchCriteriaId":"0E6DF99D-E438-4943-BC32-F2821E72AE0B"},{"vulnerable":false,"criteria":"cpe:2.3:h:juniper:ptx10001-36mr:-:*:*:*:*:*:*:*","matchCriteriaId":"C188428C-0558-44FB-845C-E885DE9A0733"},{"vulnerable":false,"criteria":"cpe:2.3:h:juniper:ptx10002:-:*:*:*:*:*:*:*","matchCriteriaId":"82B22AC2-B794-4F12-9EB3-9AA6E4B19831"},{"vulnerable":false,"criteria":"cpe:2.3:h:juniper:ptx10003:-:*:*:*:*:*:*:*","matchCriteriaId":"5BD05415-9F94-4EB8-805A-C9C0FFA9D0DF"},{"vulnerable":false,"criteria":"cpe:2.3:h:juniper:ptx10004:-:*:*:*:*:*:*:*","matchCriteriaId":"C432E543-37F5-4CA0-B239-2B97C6A16907"},{"vulnerable":false,"criteria":"cpe:2.3:h:juniper:ptx10008:-:*:*:*:*:*:*:*","matchCriteriaId":"65A64A26-4606-4D33-8958-5A3B7FFC4CDB"},{"vulnerable":false,"criteria":"cpe:2.3:h:juniper:ptx10016:-:*:*:*:*:*:*:*","matchCriteriaId":"1879799F-18B2-4958-AA90-FD19348C889F"},{"vulnerable":false,"criteria":"cpe:2.3:h:juniper:ptx3000:-:*:*:*:*:*:*:*","matchCriteriaId":"516476F9-7D4C-494F-99AA-750F4467CD15"},{"vulnerable":false,"criteria":"cpe:2.3:h:juniper:ptx5000:-:*:*:*:*:*:*:*","matchCriteriaId":"654140A0-FEC0-4DB4-83BF-ECCB000DFA4D"},{"vulnerable":false,"criteria":"cpe:2.3:h:juniper:qfx10002:-:*:*:*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