{"id":"CVE-2024-20321","state":"PUBLISHED","title":"A vulnerability in the External Border Gateway Protocol (eBGP) implementation of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (","description":"A vulnerability in the External Border Gateway Protocol (eBGP) implementation of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.\r\n\r This vulnerability exists because eBGP traffic is mapped to a shared hardware rate-limiter queue. An attacker could exploit this vulnerability by sending large amounts of network traffic with certain characteristics through an affected device. A successful exploit could allow the attacker to cause eBGP neighbor sessions to be dropped, leading to a DoS condition in the network.","publishedAt":"2024-02-28T16:14:28.992Z","updatedAt":"2024-08-16T20:12:16.247Z","severity":{"score":8.6,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","source":"cisco"},"assigner":"cisco","products":["Cisco Cisco NX-OS Software"],"affected":[{"vendor":"Cisco","product":"Cisco NX-OS Software","versions":[{"version":"7.0(3)F1(1)","status":"affected"},{"version":"7.0(3)F2(1)","status":"affected"},{"version":"7.0(3)F2(2)","status":"affected"},{"version":"7.0(3)F3(1)","status":"affected"},{"version":"7.0(3)F3(2)","status":"affected"},{"version":"7.0(3)F3(3)","status":"affected"},{"version":"7.0(3)F3(3a)","status":"affected"},{"version":"7.0(3)F3(4)","status":"affected"},{"version":"7.0(3)F3(3c)","status":"affected"},{"version":"7.0(3)F3(5)","status":"affected"},{"version":"9.2(1)","status":"affected"},{"version":"9.2(2)","status":"affected"},{"version":"9.2(2t)","status":"affected"},{"version":"9.2(3)","status":"affected"},{"version":"9.2(4)","status":"affected"},{"version":"9.2(2v)","status":"affected"},{"version":"9.3(1)","status":"affected"},{"version":"9.3(2)","status":"affected"},{"version":"9.3(3)","status":"affected"},{"version":"9.3(4)","status":"affected"},{"version":"9.3(5)","status":"affected"},{"version":"9.3(6)","status":"affected"},{"version":"9.3(7)","status":"affected"},{"version":"9.3(7a)","status":"affected"},{"version":"9.3(8)","status":"affected"},{"version":"9.3(9)","status":"affected"},{"version":"9.3(10)","status":"affected"},{"version":"9.3(11)","status":"affected"},{"version":"9.3(12)","status":"affected"},{"version":"10.1(1)","status":"affected"},{"version":"10.1(2)","status":"affected"},{"version":"10.1(2t)","status":"affected"},{"version":"10.2(1)","status":"affected"},{"version":"10.2(1q)","status":"affected"},{"version":"10.2(2)","status":"affected"},{"version":"10.2(3)","status":"affected"},{"version":"10.2(3t)","status":"affected"},{"version":"10.2(4)","status":"affected"},{"version":"10.2(5)","status":"affected"},{"version":"10.2(3v)","status":"affected"},{"version":"10.2(6)","status":"affected"},{"version":"10.3(1)","status":"affected"},{"version":"10.3(2)","status":"affected"},{"version":"10.3(3)","status":"affected"},{"version":"10.3(99w)","status":"affected"},{"version":"10.3(99x)","status":"affected"},{"version":"10.3(4a)","status":"affected"},{"version":"10.4(1)","status":"affected"}]}],"references":["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-ebgp-dos-L3QCwVJ"],"weaknesses":["CWE-400"],"ingestedAt":"2026-10-29T20:06:59.846Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/20xxx/CVE-2024-20321.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2024-20321","state":"PUBLISHED","datePublished":"2024-02-28T16:14:28.992Z","dateUpdated":"2024-08-16T20:12:16.247Z","assignerShortName":"cisco","assignerOrgId":"d1c1063e-7a18-46af-9102-31f8928bc633","dateReserved":"2023-11-08T15:08:07.640Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"A vulnerability in the External Border Gateway Protocol (eBGP) implementation of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.\r\n\r This vulnerability exists because eBGP traffic is mapped to a shared hardware rate-limiter queue. 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