CVE-2022-20823: Cisco Nexus 3016 Firmware

High severity, CVSS 8.6. EPSS: 1.1% chance of exploitation in the next 30 days.

A vulnerability in the OSPF version 3 (OSPFv3) feature 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 is due to incomplete input validation of specific OSPFv3 packets. An attacker could exploit this vulnerability by sending a malicious OSPFv3 link-state advertisement (LSA) to an affected device. A successful exploit could allow the attacker to cause the OSPFv3 process to crash and restart multiple times, causing the affected device to reload and resulting in a DoS condition. Note: The OSPFv3 feature is disabled by default. To exploit this vulnerability, an attacker must be able to establish a full OSPFv3 neighbor state with an affected device. For more information about exploitation conditions, see the Details section of this advisory.

Affected products

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
Cisco Nexus 3132q-x/3132q-Xl Firmware: affected versions not specified
Cisco Nexus 3132q-X Firmware: affected versions not specified
Cisco Nexus 3132q-Xl Firmware: affected versions not specified
Cisco Nexus 3132q Firmware: affected versions not specified
Cisco Nexus 3164q Firmware: affected versions not specified
Cisco Nexus 3172 Firmware: affected versions not specified
and 122 more

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