CVE-2021-0298

Name: CVE-2021-0298
Creator: NVD / NIST
Published: 2021-10-19T19:15:08.35+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.7/10EPSS 0.17%

Last modified Jun 17, 2026

CVE-2021-0298 is a medium-severity vulnerability rated 4.7/10 on the CVSS scale. A Race Condition in the 'show chassis pic' command in Juniper Networks Junos OS Evolved may allow an attacker to crash the port interface concentrator daemon (picd) process on the FPC, if the command is executed coincident with other system events outside the attacker's control, leading to a Denial of Service (DoS) condition. Continued execution of the CLI command, under precise conditions, could create a sustained Denial of Service (DoS) condition. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

Description

A Race Condition in the 'show chassis pic' command in Juniper Networks Junos OS Evolved may allow an attacker to crash the port interface concentrator daemon (picd) process on the FPC, if the command is executed coincident with other system events outside the attacker's control, leading to a Denial of Service (DoS) condition. Continued execution of the CLI command, under precise conditions, could create a sustained Denial of Service (DoS) condition. This issue affects all Juniper Networks Junos OS Evolved versions prior to 20.1R2-EVO on PTX10003 and PTX10008 platforms. Junos OS is not affected by this vulnerability.

Metrics

CVSS 3.1

4.7/10

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

EPSS Probability

0.17%

6.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Juniper	Junos Os Evolved	18.3	R1
Juniper	Junos Os Evolved	19.1	R1
Juniper	Junos Os Evolved	19.2	R1
Juniper	Junos Os Evolved	19.3	R1
Juniper	Junos Os Evolved	19.4	R1
Juniper	Junos Os Evolved	20.1	R1

References

https://kb.juniper.net/JSA11212Vendor Advisory
https://kb.juniper.net/JSA11212Vendor Advisory

Timeline

Published: Oct 19, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-0298?

How severe is CVE-2021-0298?

CVE-2021-0298 has a CVSS score of 4.7/10 (MEDIUM severity). The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.

How do I fix CVE-2021-0298?

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-2021-0298?

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

Scan your code now

Source: NVD / NIST