CVE-2022-22247: Juniper Junos OS Evolved

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

An Improper Input Validation vulnerability in ingress TCP segment processing of Juniper Networks Junos OS Evolved allows a network-based unauthenticated attacker to send a crafted TCP segment to the device, triggering a kernel panic, leading to a Denial of Service (DoS) condition. Continued receipt and processing of this TCP segment could create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS Evolved: 21.3 versions prior to 21.3R3-EVO; 21.4 versions prior to 21.4R2-EVO; 22.1 versions prior to 22.1R2-EVO. This issue does not affect Juniper Networks Junos OS Evolved versions prior to 21.3R1-EVO.

Affected products

• Juniper Junos OS Evolved: version 21.3 only; version 21.4 only; version 22.1 only

Published 2022-10-18. Last modified 2026-06-17.