CVE-2022-20824: Cisco Mds 9506 Firmware

High severity, CVSS 8.8. EPSS: 0.4% chance of exploitation in the next 30 days.

A vulnerability in the Cisco Discovery Protocol feature of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to execute arbitrary code with root privileges or cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper input validation of specific values that are within a Cisco Discovery Protocol message. 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 execute arbitrary code with root privileges or cause the Cisco Discovery Protocol process to crash and restart multiple times, which would cause the affected device to reload, resulting in a DoS condition. Note: 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).

Affected products

Cisco Mds 9506 Firmware: affected versions not specified
Cisco Mds 9513 Firmware: affected versions not specified
Cisco Mds 9706 Firmware: affected versions not specified
Cisco Mds 9710 Firmware: affected versions not specified
Cisco Mds 9718 Firmware: affected versions not specified
Cisco Nexus 1000v Firmware: affected versions not specified
Cisco Nexus 3016 Firmware: affected versions not specified
Cisco Nexus 3016q Firmware: affected versions not specified
Cisco Nexus 3048 Firmware: affected versions not specified
Cisco Nexus 3064-32t Firmware: affected versions not specified
Cisco Nexus 3064-T Firmware: affected versions not specified
Cisco Nexus 3064-X Firmware: affected versions not specified
Cisco Nexus 3064 Firmware: affected versions not specified
Cisco Nexus 3064t Firmware: affected versions not specified
Cisco Nexus 3064x Firmware: affected versions not specified
Cisco Nexus 3100-V Firmware: affected versions not specified
Cisco Nexus 3100-Z Firmware: affected versions not specified
Cisco Nexus 3100 Firmware: affected versions not specified
Cisco Nexus 3100v Firmware: affected versions not specified
Cisco Nexus 31108pc-V Firmware: affected versions not specified
Cisco Nexus 31108pv-V Firmware: affected versions not specified
Cisco Nexus 31108tc-V Firmware: affected versions not specified
Cisco Nexus 31128pq Firmware: affected versions not specified
Cisco Nexus 3132c-Z Firmware: affected versions not specified
Cisco Nexus 3132q-V Firmware: affected versions not specified
and 119 more

Published 2022-08-25. Last modified 2026-06-17.