{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-08-01T19:22:55.772","vulnerabilities":[{"cve":{"id":"CVE-2021-31383","sourceIdentifier":"sirt@juniper.net","published":"2021-10-19T19:15:11.313","lastModified":"2026-06-17T03:51:41.693","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"In Point to MultiPoint (P2MP) scenarios within established sessions between network or adjacent neighbors the improper use of a source to destination copy write operation combined with a Stack-based Buffer Overflow on certain specific packets processed by the routing protocol daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved sent by a remote unauthenticated network attacker causes the RPD to crash causing a Denial of Service (DoS). Continued receipt and processing of these packets will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS 19.2 versions prior to 19.2R3-S2; 19.3 versions prior to 19.3R2-S6, 19.3R3-S2; 19.4 versions prior to 19.4R1-S4, 19.4R2-S4, 19.4R3-S3; 20.1 versions prior to 20.1R2-S2, 20.1R3; 20.2 versions prior to 20.2R2-S3, 20.2R3; 20.3 versions prior to 20.3R2. This issue does not affect Juniper Networks Junos OS versions prior to 19.2R1. Juniper Networks Junos OS Evolved 20.1 versions prior to 20.1R3-EVO; 20.2 versions prior to 20.2R3-EVO; 20.3 versions prior to 20.3R2-EVO."},{"lang":"es","value":"En escenarios Punto a Multipunto (P2MP) dentro de sesiones establecidas entre vecinos de red o adyacentes, el uso inadecuado de una operación de escritura de copia de origen a destino combinada con un desbordamiento del búfer basado en la pila en determinados paquetes específicos procesados por el demonio del protocolo de enrutamiento (RPD) de Juniper Networks Junos OS y Junos OS Evolved enviados por un atacante de red remoto no autenticado causa el bloqueo del RPD causando una Denegación de Servicio (DoS). Si se siguen recibiendo y procesando estos paquetes, se creará una condición de Denegación de Servicio (DoS) sostenida. Este problema afecta a: Juniper Networks Junos OS versiones 19.2 anteriores a 19.2R3-S2; versiones 19.3 anteriores a 19.3R2-S6, 19.3R3-S2; versiones 19.4 anteriores a 19.4R1-S4, 19.4R2-S4, 19.4R3-S3; versiones 20.1 anteriores a 20.1R2-S2, 20.1R3; versiones 20.2 anteriores a 20.2R2-S3, 20.2R3; versiones 20.3 anteriores a 20.3R2. Este problema no afecta a las versiones de Juniper Networks Junos OS anteriores a 19.2R1. Versiones de Juniper Networks Junos OS Evolved 20.1 anteriores a 20.1R3-EVO; versiones 20.2 anteriores a 20.2R3-EVO; versiones 20.3 anteriores a 20.3R2-EVO"}],"affected":[{"source":"sirt@juniper.net","affectedData":[{"vendor":"Juniper Networks","product":"Junos OS","versions":[{"version":"unspecified","lessThan":"19.2R1","versionType":"custom","status":"unaffected"},{"version":"19.2","lessThan":"19.2R3-S2","versionType":"custom","status":"affected"},{"version":"19.3","lessThan":"19.3R2-S6, 19.3R3-S2","versionType":"custom","status":"affected"},{"version":"19.4","lessThan":"19.4R1-S4, 19.4R2-S4, 19.4R3-S3","versionType":"custom","status":"affected"},{"version":"20.1","lessThan":"20.1R2-S2, 20.1R3","versionType":"custom","status":"affected"},{"version":"20.2","lessThan":"20.2R2-S3, 20.2R3","versionType":"custom","status":"affected"},{"version":"20.3","lessThan":"20.3R2","versionType":"custom","status":"affected"}]},{"vendor":"Juniper Networks","product":"Junos OS Evolved","versions":[{"version":"20.1","lessThan":"20.1R3-EVO","versionType":"custom","status":"affected"},{"version":"20.2","lessThan":"20.2R3-EVO","versionType":"custom","status":"affected"},{"version":"20.3","lessThan":"20.3R2-EVO","versionType":"custom","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: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}],"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-121"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-787"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.2:-:*:*:*:*:*:*","matchCriteriaId":"0E7545CE-6300-4E81-B5AF-2BE150C1B190"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.2:r1:*:*:*:*:*:*","matchCriteriaId":"4CA3060F-1800-4A06-A453-FB8CE4B65312"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.2:r1-s1:*:*:*:*:*:*","matchCriteriaId":"9A5B337A-727C-4767-AD7B-E0F7F99EB46F"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.2:r1-s2:*:*:*:*:*:*","matchCriteriaId":"16FDE60B-7A99-4683-BC14-530B5B005F8B"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.2:r1-s3:*:*:*:*:*:*","matchCriteriaId":"725D8C27-E4F8-4394-B4EC-B49B6D3C2709"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.2:r1-s4:*:*:*:*:*:*","matchCriteriaId":"8233C3AB-470E-4D13-9BFD-C9E90918FD0B"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.2:r1-s5:*:*:*:*:*:*","matchCriteriaId":"5F7A233A-D4F6-46FA-92E9-2ACE13E4A6A4"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.2:r1-s6:*:*:*:*:*:*","matchCriteriaId":"ADCE4EA8-DDBA-4766-BB81-E4DA29723723"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.2:r2:*:*:*:*:*:*","matchCriteriaId":"7C71D2FA-B1A4-4004-807F-7B3BB347DF4C"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.2:r2-s1:*:*:*:*:*:*","matchCriteriaId":"9E78E854-DDD3-4D1A-97AB-AEA70B9B811F"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.2:r3:*:*:*:*:*:*","matchCriteriaId":"512FB3D1-BA5B-4F73-BDB2-49D6889F5473"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.2:r3-s1:*:*:*:*:*:*","matchCriteriaId":"7FCBFF57-83A1-4C1C-A38D-7DAB48BCA2EC"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.3:-:*:*:*:*:*:*","matchCriteriaId":"59006503-B2CA-4F79-AC13-7C5615A74CE5"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.3:r1:*:*:*:*:*:*","matchCriteriaId":"B8110DA9-54B1-43CF-AACB-76EABE0C9EF6"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.3:r1-s1:*:*:*:*:*:*","matchCriteriaId":"11B5CC5A-1959-4113-BFCF-E4BA63D918C1"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.3:r2:*:*:*:*:*:*","matchCriteriaId":"33F08A33-EF80-4D86-9A9A-9DF147B9B6D3"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.3:r2-s1:*:*:*:*:*:*","matchCriteriaId":"AF24ACBD-5F84-47B2-BFF3-E9A56666269C"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.3:r2-s2:*:*:*:*:*:*","matchCriteriaId":"3935A586-41BD-4FA5-9596-DED6F0864777"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.3:r2-s3:*:*:*:*:*:*","matchCriteriaId":"B83FB539-BD7C-4BEE-9022-098F73902F38"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.3:r2-s4:*:*:*:*:*:*","matchCriteriaId":"7659AC36-A5EA-468A-9793-C1EC914D36F4"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.3:r2-s5:*:*:*:*:*:*","matchCriteriaId":"E0E018E1-568E-40F2-ADA5-F71509811879"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.3:r3:*:*:*:*:*:*","matchCriteriaId":"B9295AF3-A883-47C3-BAF8-3D82F719733E"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.3:r3-s1:*:*:*:*:*:*","matchCriteriaId":"F09D3262-394A-43D1-A4ED-8887FCB20F87"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.4:r1:*:*:*:*:*:*","matchCriteriaId":"DC743EE4-8833-452A-94DB-655BF139F883"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.4:r1-s1:*:*:*:*:*:*","matchCriteriaId":"FE96A8EA-FFE3-4D8F-9266-21899149D634"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.4:r1-s2:*:*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