CVE-2022-22207: Juniper Junos

High severity, CVSS 7.5. EPSS: 0.8% chance of exploitation in the next 30 days.

A Use After Free vulnerability in the Advanced Forwarding Toolkit (AFT) manager process (aftmand) of Juniper Networks Junos OS allows an unauthenticated networked attacker to cause a kernel crash due to intensive polling of Abstracted Fabric (AF) interface statistics and thereby a Denial of Service (DoS). Continued gathering of AF interface statistics will create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS on MX Series: 20.1 versions later than 20.1R1; 20.2 versions prior to 20.2R3-S5; 20.3 versions prior to 20.3R3-S4; 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R2; 21.2 versions prior to 21.2R2.

Affected products

• Juniper Junos: version 20.1 only; version 20.2 only; version 20.3 only; version 20.4 only; version 21.1 only; version 21.2 only

Published 2022-07-20. Last modified 2026-06-17.