[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fgPZTyj_Zad1Yj_i23r3vXChZ5KKTg08TP0zXzKBi2Dk":3,"g5a-family:cisco\u002Fncs_5501":101,"g5a-ex:cisco\u002Fncs_5501@*":102},{"success":4,"data":5},true,{"product":6,"versions":17,"topVulnerabilitiesByEpss":19,"kevVulnerabilities":70,"seoMetadata":79,"meta":98},{"vendorName":7,"productName":8,"versionCount":9,"totalCves":10,"kevCount":11,"lastCveUpdate":12,"versions":13,"description":16},"cisco","ncs_5501",1,23,2,"2025-03-12",[14],{"version":15,"cve_count":11,"kev_count":9,"has_kev":4},"se","Ncs 5501 by Cisco is a technology product with 1 tracked version and 23 known security vulnerabilities including 2 CISA Known Exploited Vulnerabilities. Get comprehensive security analysis, vulnerability tracking, and threat intelligence for this product.",[18],{"version":15,"cve_count":11,"kev_count":9,"has_kev":4},[20,28,34,41,47,52,57,61,64,66],{"cveId":21,"description":22,"publishedDate":23,"cvssScore":24,"cvssVersion":25,"severity":26,"isKev":4,"epssScore":27},"CVE-2020-3118","A vulnerability in the Cisco Discovery Protocol implementation for Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to execute arbitrary code or cause a reload on an affected device. The vulnerability is due to improper validation of string input from certain fields in Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected device. A successful exploit could allow the attacker to cause a stack overflow, which could allow the attacker to execute arbitrary code with administrative privileges on an affected device. Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).","2020-02-05",8.8,"v3.1","High",0.11685,{"cveId":29,"description":30,"publishedDate":31,"cvssScore":32,"cvssVersion":25,"severity":26,"isKev":4,"epssScore":33},"CVE-2020-3569","Multiple vulnerabilities in the Distance Vector Multicast Routing Protocol (DVMRP) feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to either immediately crash the Internet Group Management Protocol (IGMP) process or make it consume available memory and eventually crash. The memory consumption may negatively impact other processes that are running on the device. These vulnerabilities are due to the incorrect handling of IGMP packets. An attacker could exploit these vulnerabilities by sending crafted IGMP traffic to an affected device. A successful exploit could allow the attacker to immediately crash the IGMP process or cause memory exhaustion, resulting in other processes becoming unstable. These processes may include, but are not limited to, interior and exterior routing protocols. Cisco will release software updates that address these vulnerabilities.","2020-09-23",8.6,0.0332,{"cveId":35,"description":36,"publishedDate":23,"cvssScore":37,"cvssVersion":25,"severity":38,"isKev":39,"epssScore":40},"CVE-2020-3120","A vulnerability in the Cisco Discovery Protocol implementation for Cisco FXOS Software, Cisco IOS XR Software, and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to a missing check when the affected software processes Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected device. A successful exploit could allow the attacker to exhaust system memory, causing the device to reload. Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).",6.5,"Medium",false,0.01639,{"cveId":42,"description":43,"publishedDate":44,"cvssScore":45,"cvssVersion":25,"severity":26,"isKev":39,"epssScore":46},"CVE-2021-34718","A vulnerability in the SSH Server process of Cisco IOS XR Software could allow an authenticated, remote attacker to overwrite and read arbitrary files on the local device. This vulnerability is due to insufficient input validation of arguments that are supplied by the user for a specific file transfer method. An attacker with lower-level privileges could exploit this vulnerability by specifying Secure Copy Protocol (SCP) parameters when authenticating to a device. A successful exploit could allow the attacker to elevate their privileges and retrieve and upload files on a device that they should not have access to.","2021-09-09",8.1,0.01581,{"cveId":48,"description":49,"publishedDate":50,"cvssScore":37,"cvssVersion":25,"severity":38,"isKev":39,"epssScore":51},"CVE-2019-16027","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.","2020-01-26",0.01513,{"cveId":53,"description":54,"publishedDate":44,"cvssScore":55,"cvssVersion":25,"severity":26,"isKev":39,"epssScore":56},"CVE-2021-34737","A vulnerability in the DHCP version 4 (DHCPv4) server feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to trigger a crash of the dhcpd process, resulting in a denial of service (DoS) condition. This vulnerability exists because certain DHCPv4 messages are improperly validated when they are processed by an affected device. An attacker could exploit this vulnerability by sending a malformed DHCPv4 message to an affected device. A successful exploit could allow the attacker to cause a NULL pointer dereference, resulting in a crash of the dhcpd process. While the dhcpd process is restarting, which may take up to approximately two minutes, DHCPv4 server services are unavailable on the affected device. This could temporarily prevent network access to clients that join the network during that time period. Note: Only the dhcpd process crashes and eventually restarts automatically. The router does not reload.",7.5,0.01328,{"cveId":58,"description":59,"publishedDate":50,"cvssScore":32,"cvssVersion":25,"severity":26,"isKev":39,"epssScore":60},"CVE-2019-16020","Multiple vulnerabilities in the implementation of Border Gateway Protocol (BGP) Ethernet VPN (EVPN) functionality in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerabilities are due to incorrect processing of BGP update messages that contain crafted EVPN attributes. An attacker could exploit these vulnerabilities by sending BGP EVPN update messages with malformed attributes to be processed by an affected system. A successful exploit could allow the attacker to cause the BGP process to restart unexpectedly, resulting in a DoS condition. The Cisco implementation of BGP accepts incoming BGP traffic only from explicitly defined peers. To exploit these vulnerabilities, the malicious BGP update message would need to come from a configured, valid BGP peer, or would need to be injected by the attacker into the victim's BGP network on an existing, valid TCP connection to a BGP peer.",0.01312,{"cveId":62,"description":63,"publishedDate":50,"cvssScore":32,"cvssVersion":25,"severity":26,"isKev":39,"epssScore":60},"CVE-2019-15989","A vulnerability in the implementation of the Border Gateway Protocol (BGP) functionality in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to incorrect processing of a BGP update message that contains a specific BGP attribute. An attacker could exploit this vulnerability by sending BGP update messages that include a specific, malformed attribute to be processed by an affected system. A successful exploit could allow the attacker to cause the BGP process to restart unexpectedly, resulting in a DoS condition. The Cisco implementation of BGP accepts incoming BGP traffic only from explicitly defined peers. To exploit this vulnerability, the malicious BGP update message would need to come from a configured, valid BGP peer or would need to be injected by the attacker into the victim’s BGP network on an existing, valid TCP connection to a BGP peer.",{"cveId":65,"description":59,"publishedDate":50,"cvssScore":32,"cvssVersion":25,"severity":26,"isKev":39,"epssScore":60},"CVE-2019-16022",{"cveId":67,"description":68,"publishedDate":44,"cvssScore":32,"cvssVersion":25,"severity":26,"isKev":39,"epssScore":69},"CVE-2021-34720","A vulnerability in the IP Service Level Agreements (IP SLA) responder and Two-Way Active Measurement Protocol (TWAMP) features of Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause device packet memory to become exhausted or cause the IP SLA process to crash, resulting in a denial of service (DoS) condition. This vulnerability exists because socket creation failures are mishandled during the IP SLA and TWAMP processes. An attacker could exploit this vulnerability by sending specific IP SLA or TWAMP packets to an affected device. A successful exploit could allow the attacker to exhaust the packet memory, which will impact other processes, such as routing protocols, or crash the IP SLA process.",0.0129,[71,76],{"cveId":21,"description":22,"publishedDate":23,"cvssScore":24,"severity":26,"isKev":4,"epssScore":27,"cisaVulnName":72,"cisaDateAdded":73,"cisaShortDescription":74,"cisaRequiredAction":75},"Cisco IOS XR Software Discovery Protocol Format String Vulnerability","2021-11-03","Cisco IOS XR improperly validates string input from certain fields in Cisco Discovery Protocol messages. Exploitation could allow an unauthenticated, adjacent attacker to execute code with administrative privileges or cause a reload on an affected device.","Apply updates per vendor instructions.",{"cveId":29,"description":30,"publishedDate":31,"cvssScore":32,"severity":26,"isKev":4,"epssScore":33,"cisaVulnName":77,"cisaDateAdded":73,"cisaShortDescription":78,"cisaRequiredAction":75},"Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerability","Cisco IOS XR Distance Vector Multicast Routing Protocol (DVMRP) incorrectly handles Internet Group Management Protocol (IGMP) packets. Exploitation could allow an unauthenticated, remote attacker to immediately crash the IGMP process or make it consume available memory and eventually crash.",{"title":80,"metaDescription":81,"keywords":82,"structuredData":83},"Ncs 5501 by Cisco - Security Vulnerabilities & Analysis | Precursor Intelligence","Comprehensive security analysis for Ncs 5501 by Cisco covering 1 version with 23 tracked vulnerabilities including 0 critical and 2 high-severity issues and 2 CISA KEV vulnerabilities. Real-time threat intelligence, CVE tracking, and security recommendations.","Ncs 5501 vulnerabilities, Ncs 5501 security, Ncs 5501 CVE, Cisco Ncs 5501, Ncs 5501 threat intelligence, Cisco security, product security analysis, cybersecurity threats, vulnerability management, CVE tracking, Ncs 5501 KEV, Ncs 5501 exploited vulnerabilities",{"@context":84,"@type":85,"name":86,"description":81,"url":87,"manufacturer":88,"applicationCategory":92,"softwareVersion":93,"mainEntity":94},"https:\u002F\u002Fschema.org","SoftwareApplication","Ncs 5501","https:\u002F\u002Fprecursorintelligence.com\u002Fvulnerabilities\u002Ftechnologies\u002Fvendors\u002Fcisco\u002Fncs_5501",{"@type":89,"name":90,"url":91},"Organization","Cisco","https:\u002F\u002Fprecursorintelligence.com\u002Fvendors\u002Fcisco","Security Software","1 versions tracked",{"@type":95,"name":96,"description":97,"vulnerabilityCount":10,"dateModified":12},"SecurityVulnerability","Ncs 5501 Security Vulnerabilities","Security vulnerabilities affecting Ncs 5501 by Cisco",{"totalVersions":9,"totalVulnerabilities":10,"kevVulnerabilities":11,"lastUpdated":12,"generatedAt":99,"apiVersion":100},"2026-10-19T01:27:28.002Z","3.0",[],{"rows":103,"total":11,"capped":39,"failed":112},[104,108],{"cveId":21,"name":72,"severity":26,"cvss":24,"added":73,"epss":27,"published":105,"ranges":106,"checked":4,"hits":107,"covers":39},"2020-02-05T18:15:10.907",[],[],{"cveId":29,"name":77,"severity":26,"cvss":32,"added":73,"epss":33,"published":109,"ranges":110,"checked":4,"hits":111,"covers":39},"2020-09-23T01:15:15.503",[],[],0]