VULNERABILITY INTELLIGENCE

CVE-2024-20321

CVSS score8.6 HIGH
EPSS probability0.71%
CISA KEVNot currently listed
Published2024-02-29
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

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. 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.

Weakness classification

  • psirt@cisco.com: CWE-400
  • nvd@nist.gov: CWE-770

Primary references