{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-09-21T12:25:06.894","vulnerabilities":[{"cve":{"id":"CVE-2021-0294","sourceIdentifier":"sirt@juniper.net","published":"2021-07-15T20:15:11.277","lastModified":"2026-06-17T03:29:44.473","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"A vulnerability in Juniper Networks Junos OS, which only affects the release 18.4R2-S5, where a function is inconsistently implemented on Juniper Networks Junos QFX5000 Series and EX4600 Series, and if \"storm-control enhanced\" is configured, can lead to the enhanced storm control filter group not be installed. It will cause storm control not to work hence allowing an attacker to cause high CPU usage or packet loss issues by sending a large amount of broadcast or unknown unicast packets arriving the device. This issue affects Juniper Networks QFX5100, QFX5110, QFX5120, QFX5200, QFX5210, EX4600, and EX4650, and QFX5100 with QFX 5e Series image installed. QFX5130 and QFX5220 are not affected from this issue. This issue affects Juniper Networks Junos OS 18.4R2-S5 on QFX5000 Series and EX4600 Series. No other product or platform is affected by this vulnerability."},{"lang":"es","value":"Una vulnerabilidad en Juniper Networks Junos OS, que sólo afecta a la versión 18.4R2-S5, en la que una función es inconsistentemente implementada en las series QFX5000 y EX4600 de Juniper Networks, y si se configura \"storm-control enhanced\", puede conllevar a que el grupo storm-control enhanced filter no sea instalado. Esto hará que storm control no funcione, lo que permitirá a un atacante causar un alto uso de la CPU o problemas de pérdida de paquetes mediante el envío de una gran cantidad de paquetes de difusión o unidifusión desconocida que llegan al dispositivo. Este problema afecta a los dispositivos QFX5100, QFX5110, QFX5120, QFX5200, QFX5210, EX4600 y EX4650 de Juniper Networks y a los QFX5100 con la imagen de la serie QFX 5e instalada. Los modelos QFX5130 y QFX5220 no se ven afectados por este problema. Este problema afecta a Juniper Networks Junos OS 18.4R2-S5 en las series QFX5000 y EX4600. Ningún otro producto o plataforma se ve afectado por esta vulnerabilidad"}],"affected":[{"source":"sirt@juniper.net","affectedData":[{"vendor":"Juniper Networks","product":"Junos OS","platforms":["QFX5000 Series, EX4600 Series"],"versions":[{"version":"18.4R2-S5","status":"affected"}]}]}],"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:L","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW"},"exploitabilityScore":3.9,"impactScore":1.4}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:P","baseScore":5.0,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL"},"baseSeverity":"MEDIUM","exploitabilityScore":10.0,"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-474"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"NVD-CWE-Other"}]}],"configurations":[{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:18.4:r2-s5:*:*:*:*:*:*","matchCriteriaId":"34E28FD9-1089-42F7-8586-876DBEC965DE"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:juniper:ex4600:-:*:*:*:*:*:*:*","matchCriteriaId":"D1BB20B5-EA30-4E8E-9055-2E629648436A"},{"vulnerable":false,"criteria":"cpe:2.3:h:juniper:ex4650:-:*:*:*:*:*:*:*","matchCriteriaId":"2B425BB1-3C78-42B1-A6C1-216E514191F0"},{"vulnerable":false,"criteria":"cpe:2.3:h:juniper:qfx5100:-:*:*:*:*:*:*:*","matchCriteriaId":"E974B4BC-64C5-4BB6-AF31-D46AF3763416"},{"vulnerable":false,"criteria":"cpe:2.3:h:juniper:qfx5110:-:*:*:*:*:*:*:*","matchCriteriaId":"79A8847B-4F98-4949-8639-5CD2B411D10F"},{"vulnerable":false,"criteria":"cpe:2.3:h:juniper:qfx5120:-:*:*:*:*:*:*:*","matchCriteriaId":"09EBDE4B-764F-4DF1-844A-BB8A52CD53EF"},{"vulnerable":false,"criteria":"cpe:2.3:h:juniper:qfx5200:-:*:*:*:*:*:*:*","matchCriteriaId":"EDC5478F-A047-4F6D-BB11-0077A74C0174"},{"vulnerable":false,"criteria":"cpe:2.3:h:juniper:qfx5210:-:*:*:*:*:*:*:*","matchCriteriaId":"D877320D-1997-4B66-B11B-864020C755E1"}]}]}],"references":[{"url":"https://kb.juniper.net/JSA11196","source":"sirt@juniper.net","tags":["Vendor Advisory"]},{"url":"https://kb.juniper.net/JSA11196","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]}]}}]}