{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-21T19:44:45.309","vulnerabilities":[{"cve":{"id":"CVE-2019-16027","sourceIdentifier":"psirt@cisco.com","published":"2020-01-26T05:15:16.677","lastModified":"2024-11-21T04:29:57.407","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"A vulnerability in the implementation of the Intermediate System–to–Intermediate System (IS–IS) routing protocol functionality in Cisco IOS XR Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition in the IS–IS process. The vulnerability is due to improper handling of a Simple Network Management Protocol (SNMP) request for specific Object Identifiers (OIDs) by the IS–IS process. An attacker could exploit this vulnerability by sending a crafted SNMP request to the affected device. A successful exploit could allow the attacker to cause a DoS condition in the IS–IS process."},{"lang":"es","value":"Una vulnerabilidad en la implementación de la funcionalidad del protocolo de enrutamiento Intermediate System–to–Intermediate System (IS–IS) en Cisco IOS XR Software, podría permitir a un atacante remoto autenticado causar una condición de denegación de servicio (DoS) en el proceso IS–IS. La vulnerabilidad es debido al manejo inapropiado de una petición de Protocolo Simple Network Management Protocol (SNMP) para Object Identifiers (OIDs) específicos por el proceso IS–IS. Un atacante podría explotar esta vulnerabilidad mediante el envío de una petición SNMP diseñada hacia el dispositivo afectado. Una explotación con éxito podría permitir al atacante causar una condición DoS en el proceso IS–IS."}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","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}],"cvssMetricV30":[{"source":"psirt@cisco.com","type":"Secondary","cvssData":{"version":"3.0","vectorString":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","baseScore":7.7,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.1,"impactScore":4.0}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:S/C:N/I:N/A:P","baseScore":4.0,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"SINGLE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL"},"baseSeverity":"MEDIUM","exploitabilityScore":8.0,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"psirt@cisco.com","type":"Secondary","description":[{"lang":"en","value":"CWE-20"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-20"}]}],"configurations":[{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:4.3.2:*:*:*:*:*:*:*","matchCriteriaId":"73D962D3-563F-4CDE-B51D-224D7995FBC9"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:xr_12404:-:*:*:*:*:*:*:*","matchCriteriaId":"EE1F838A-6CB9-4948-AC05-6C0CF412FF6D"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:xr_12406:-:*:*:*:*:*:*:*","matchCriteriaId":"DBE5027B-E4E9-4661-9480-F344D5AF7620"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:xr_12410:-:*:*:*:*:*:*:*","matchCriteriaId":"198D511F-F024-4E91-B323-7F1CDA0AE4E7"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:xr_12416:-:*:*:*:*:*:*:*","matchCriteriaId":"3ADE218D-CD09-4334-8C83-AFAC8D41F61E"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:5.2.5:*:*:*:*:*:*:*","matchCriteriaId":"A0B5C0F4-1BEC-4B54-ABF0-948CFF80E5E0"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.2.2:*:*:*:*:*:*:*","matchCriteriaId":"F517C60E-4580-486E-9A03-82A023755374"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.2.3:*:*:*:*:*:*:*","matchCriteriaId":"370F74EC-829D-4574-BE7D-85700E15C433"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.2.25:*:*:*:*:*:*:*","matchCriteriaId":"11E58E99-E8DD-4AF1-BA44-7E81223AB1F7"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.3.3:*:*:*:*:*:*:*","matchCriteriaId":"47F3F8E3-D93B-4BAB-8643-AFBFC36940AA"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.4.2:*:*:*:*:*:*:*","matchCriteriaId":"E67F538A-3E1A-4749-BB8D-4F8043653B6E"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:ncs_6000:-:*:*:*:*:*:*:*","matchCriteriaId":"523058BF-DE14-4FAD-8A67-C8CA795032D9"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:ncs_6008:-:*:*:*:*:*:*:*","matchCriteriaId":"61AF653C-DCD4-4B20-A555-71120F9A5BB9"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.1.3:*:*:*:*:*:*:*","matchCriteriaId":"D093D77E-66E3-4659-820E-F7E03A51A83C"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.1.4:*:*:*:*:*:*:*","matchCriteriaId":"FC06F7E7-D67F-4C91-B545-F7EB62858BA5"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.2.3:*:*:*:*:*:*:*","matchCriteriaId":"370F74EC-829D-4574-BE7D-85700E15C433"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.2.25:*:*:*:*:*:*:*","matchCriteriaId":"11E58E99-E8DD-4AF1-BA44-7E81223AB1F7"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.3.3:*:*:*:*:*:*:*","matchCriteriaId":"47F3F8E3-D93B-4BAB-8643-AFBFC36940AA"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.4.2:*:*:*:*:*:*:*","matchCriteriaId":"E67F538A-3E1A-4749-BB8D-4F8043653B6E"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.5.2:*:*:*:*:*:*:*","matchCriteriaId":"2DE98B34-501B-449A-843A-58F297EDBE1B"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.5.3:*:*:*:*:*:*:*","matchCriteriaId":"86E05C3F-4095-4B9C-8C11-E32567EB14AC"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:ncs_5001:-:*:*:*:*:*:*:*","matchCriteriaId":"E2A8C028-107B-4410-BCC6-5BCB8DB63603"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:ncs_5002:-:*:*:*:*:*:*:*","matchCriteriaId":"DA13FE67-F4AE-46DF-921B-3FB91BDF742B"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:ncs_5011:-:*:*:*:*:*:*:*","matchCriteriaId":"98622F14-CC47-45E0-85E4-A7243309487C"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.1.3:*:*:*:*:*:*:*","matchCriteriaId":"D093D77E-66E3-4659-820E-F7E03A51A83C"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.1.4:*:*:*:*:*:*:*","matchCriteriaId":"FC06F7E7-D67F-4C91-B545-F7EB62858BA5"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.2.3:*:*:*:*:*:*:*","matchCriteriaId":"370F74EC-829D-4574-BE7D-85700E15C433"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.3.3:*:*:*:*:*:*:*","matchCriteriaId":"47F3F8E3-D93B-4BAB-8643-AFBFC36940AA"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.3.15:*:*:*:*:*:*:*","matchCriteriaId":"31EC2C35-59C4-4827-89B6-F1A1EDEF8EFF"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.5.2:*:*:*:*:*:*:*","matchCriteriaId":"2DE98B34-501B-449A-843A-58F297EDBE1B"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.5.3:*:*:*:*:*:*:*","matchCriteriaId":"86E05C3F-4095-4B9C-8C11-E32567EB14AC"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.6.1:*:*:*:*:*:*:*","matchCriteriaId":"54EA6C52-E541-4426-A3DF-2FA88CA28BA1"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.6.25:*:*:*:*:*:*:*","matchCriteriaId":"3DC7F758-5AB7-4A45-A889-BE9DD8D0474E"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:ncs_5500:-:*:*:*:*:*:*:*","matchCriteriaId":"D686F339-9406-4ADF-B124-C815D43E4CAA"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:ncs_5501:-:*:*:*:*:*:*:*","matchCriteriaId":"0A972EFE-4F7E-4BFC-8631-66A2D16B74A3"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:ncs_5502:-:*:*:*:*:*:*:*","matchCriteriaId":"7F72AEF0-EE70-40F8-B52B-1390820B87BB"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:ncs_5508:-:*:*:*:*:*:*:*","matchCriteriaId":"43D21B01-A754-474F-8E46-14D733AB307E"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:ncs_5516:-:*:*:*:*:*:*:*","matchCriteriaId":"17D6424C-972F-459C-B8F7-04FFD9F541BC"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.1.4:*:*:*:*:*:*:*","matchCriteriaId":"FC06F7E7-D67F-4C91-B545-F7EB62858BA5"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.2.3:*:*:*:*:*:*:*","matchCriteriaId":"370F74EC-829D-4574-BE7D-85700E15C433"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.4.2:*:*:*:*:*:*:*","matchCriteriaId":"E67F538A-3E1A-4749-BB8D-4F8043653B6E"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:crs:-:*:*:*:*:*:*:*","matchCriteriaId":"4B051AF4-592A-4201-9DD3-8683C1847A00"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.1.4:*:*:*:*:*:*:*","matchCriteriaId":"FC06F7E7-D67F-4C91-B545-F7EB62858BA5"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.2.3:*:*:*:*:*:*:*","matchCriteriaId":"370F74EC-829D-4574-BE7D-85700E15C433"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.4.2:*:*:*:*:*:*:*","matchCriteriaId":"E67F538A-3E1A-4749-BB8D-4F8043653B6E"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.5.3:*:*:*:*:*:*:*","matchCriteriaId":"86E05C3F-4095-4B9C-8C11-E32567EB14AC"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.6.2:*:*:*:*:*:*:*","matchCriteriaId":"B8AE8971-5003-4A39-8173-E17CE9C2523F"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:xrv_9000:-:*:*:*:*:*:*:*","matchCriteriaId":"0B529456-23DB-4917-A316-4CFC6AEC9964"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.3.3:*:*:*:*:*:*:*","matchCriteriaId":"47F3F8E3-D93B-4BAB-8643-AFBFC36940AA"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.5.3:*:*:*:*:*:*:*","matchCriteriaId":"86E05C3F-4095-4B9C-8C11-E32567EB14AC"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.6.25:*:*:*:*:*:*:*","matchCriteriaId":"3DC7F758-5AB7-4A45-A889-BE9DD8D0474E"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:ncs_540:-:*:*:*:*:*:*:*","matchCriteriaId":"BC7AE6C1-B7C6-4056-9719-B5CFF71970AD"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.6.25:*:*:*:*:*:*:*","matchCriteriaId":"3DC7F758-5AB7-4A45-A889-BE9DD8D0474E"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:ncs_560:-:*:*:*:*:*:*:*","matchCriteriaId":"D4CC8256-E4F8-4DCB-B69A-40A7C5AA41E8"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.1.2:*:*:*:*:*:*:*","matchCriteriaId":"0235F415-F327-4914-8E2A-96334984797D"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.1.3:*:*:*:*:*:*:*","matchCriteriaId":"D093D77E-66E3-4659-820E-F7E03A51A83C"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.1.4:*:*:*:*:*:*:*","matchCriteriaId":"FC06F7E7-D67F-4C91-B545-F7EB62858BA5"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.2.2:*:*:*:*:*:*:*","matchCriteriaId":"F517C60E-4580-486E-9A03-82A023755374"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.2.3:*:*:*:*:*:*:*","matchCriteriaId":"370F74EC-829D-4574-BE7D-85700E15C433"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.3.2:*:*:*:*:*:*:*","matchCriteriaId":"540112FA-0329-4CD3-B57B-8CAA6DAC80C7"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.3.3:*:*:*:*:*:*:*","matchCriteriaId":"47F3F8E3-D93B-4BAB-8643-AFBFC36940AA"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.4.2:*:*:*:*:*:*:*","matchCriteriaId":"E67F538A-3E1A-4749-BB8D-4F8043653B6E"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.5.2:*:*:*:*:*:*:*","matchCriteriaId":"2DE98B34-501B-449A-843A-58F297EDBE1B"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.5.3:*:*:*:*:*:*:*","matchCriteriaId":"86E05C3F-4095-4B9C-8C11-E32567EB14AC"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:6.6.2:*:*:*:*:*:*:*","matchCriteriaId":"B8AE8971-5003-4A39-8173-E17CE9C2523F"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:asr_9000:-:*:*:*:*:*:*:*","matchCriteriaId":"3FEF8271-315F-4756-931F-015F790BE693"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:asr_9000v:v2:*:*:*:*:*:*:*","matchCriteriaId":"C6B6AF64-42FF-4411-85EA-9AE537383CD6"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:asr_9001:-:*:*:*:*:*:*:*","matchCriteriaId":"324C97E6-1810-404F-9F45-6240F99FF039"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:asr_9006:-:*:*:*:*:*:*:*","matchCriteriaId":"57EB55BB-41B7-40A1-B6F5-142FE8AB4C16"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:*:*","matchCriteriaId":"433F4A82-04A4-4EAA-8C19-F7581DCD8D29"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:asr_9901:-:*:*:*:*:*:*:*","matchCriteriaId":"2D5E60AB-94FF-448A-89D8-5D2197E21C74"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:asr_9903:-:*:*:*:*:*:*:*","matchCriteriaId":"FA241214-2F05-4360-9B50-385355E29CF4"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:*:*","matchCriteriaId":"A93212A4-50AB-42E7-89A4-5FBBAEA050C3"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:asr_9906:-:*:*:*:*:*:*:*","matchCriteriaId":"EDA53A61-98B3-458C-8893-61CD7D6B1E48"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:asr_9910:-:*:*:*:*:*:*:*","matchCriteriaId":"F396564E-B477-4A27-A189-CEB737552E25"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:*:*","matchCriteriaId":"5445CC54-ACFB-4070-AF26-F91FEAA85181"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:asr_9920:-:*:*:*:*:*:*:*","matchCriteriaId":"49E7ED87-8AC0-4107-A7A5-F334236E2906"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:*:*","matchCriteriaId":"D7AA58E5-D7E1-48CF-93FF-C60EB85B2BC7"}]}]}],"references":[{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200122-ios-xr-dos","source":"psirt@cisco.com","tags":["Vendor Advisory"]},{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200122-ios-xr-dos","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]}]}}]}