CVE-2022-22247

Name: CVE-2022-22247
Creator: NVD / NIST
Published: 2022-10-18T03:15:11.387+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.57%

Last modified Jun 17, 2026

CVE-2022-22247 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.57% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.57%

42.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Juniper	Junos Os Evolved	21.3	—
Juniper	Junos Os Evolved	21.4	—
Juniper	Junos Os Evolved	22.1	R1

References

https://kb.juniper.net/JSA69904Vendor Advisory
https://kb.juniper.net/JSA69904Vendor Advisory

Timeline

Published: Oct 18, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-22247?

How severe is CVE-2022-22247?

CVE-2022-22247 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.57% probability of exploitation in the next 30 days.

How do I fix CVE-2022-22247?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-22247?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST