CVE-2022-20623: fallo de gravedad alta en Cisco NX-OS Software
Cisco Nexus 9000 Series Switches Bidirectional Forwarding Detection Denial of Service Vulnerability
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
26Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 8.6epss 12%
A vulnerability in the rate limiter for Bidirectional Forwarding Detection (BFD) traffic of Cisco NX-OS Software for Cisco Nexus 9000 Series Switches could allow an unauthenticated, remote attacker to cause BFD traffic to be dropped on an affected device. This vulnerability is due to a logic error in the BFD rate limiter functionality. An attacker could exploit this vulnerability by sending a crafted stream of traffic through the device. A successful exploit could allow the attacker to cause BFD traffic to be dropped, resulting in BFD session flaps. BFD session flaps can cause route instability and dropped traffic, resulting in a denial of service (DoS) condition. This vulnerability applies to both IPv4 and IPv6 traffic.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Productos afectados
Cisco · Cisco NX-OS SoftwareCVEs relacionadas — Cisco NX-OS Software
En el mismo producto, de las más peligrosas a las menos.
CVE-2024-20399MEDIUMCisco NX-OS Software CLI Command Injection VulnerabilityEPSS 4.3%KEVCVE-2022-20650HIGHCisco NX-OS Software NX-API Command Injection VulnerabilityEPSS 14.5%CVE-2022-20624HIGHCisco NX-OS Software Cisco Fabric Services Over IP Denial of Service VulnerabilityEPSS 12.1%CVE-2026-76455CRITICALCisco NX-OS Software Security Hardening Release: October 2026 - Improper Access Control VulnerabilitiesEPSS 4.0%CVE-2022-20625MEDIUMCisco FXOS and NX-OS Software Cisco Discovery Protocol Service Denial of Service VulnerabilityEPSS 3.3%CVE-2025-20292MEDIUMCisco NXOS Software Command Injection VulnerabilityEPSS 3.1%