What is CVE-2021-0266?

CVE-2021-0266 refers to a vulnerability in cSRX Series software in Juniper Networks Junos OS that allows an attacker to take control of any instance of a cSRX deployment through device management services.

Which versions of Juniper Networks Junos OS are affected by CVE-2021-0266?

CVE-2021-0266 affects all versions of Juniper Networks Junos OS on cSRX Series prior to 20.2R...

What is the severity of CVE-2021-0266?

The severity of CVE-2021-0266 is rated as critical, with a severity value of 9.8.

How can an attacker exploit CVE-2021-0266?

An attacker can exploit CVE-2021-0266 by taking advantage of the multiple hard-coded cryptographic keys in the cSRX Series software.

Is Juniper Csrx affected by CVE-2021-0266?

No, Juniper Csrx is not affected by CVE-2021-0266.

Vulnerability/
CVE-2021-0266

critical

9.8

CWE

798 321

22/4/2021

17/9/2024

CVE-2021-0266: cSRX: Use of Hard-coded Cryptographic Keys allows an attacker to take control of the device through device management services.

First published: Thu Apr 22 2021(Updated: )

The use of multiple hard-coded cryptographic keys in cSRX Series software in Juniper Networks Junos OS allows an attacker to take control of any instance of a cSRX deployment through device management services. This issue affects: Juniper Networks Junos OS on cSRX Series: All versions prior to 20.2R3; 20.3 versions prior to 20.3R2; 20.4 versions prior to 20.4R2.

Credit: sirt@juniper.net

Affected Software	Affected Version	How to fix
Juniper JUNOS	=20.2-r1
Juniper JUNOS	=20.2-r1-s1
Juniper JUNOS	=20.2-r1-s2
Juniper JUNOS	=20.2-r1-s3
Juniper JUNOS	=20.3-r1
Juniper JUNOS	=20.3-r1-s1
Juniper JUNOS	=20.4-r1
Juniper JUNOS	=20.4-r1-s1
Juniper Csrx

Remedy

The following software releases have been updated to resolve this specific issue: 20.2R3, 20.3R2, 20.4R2, 21.1R1, and all subsequent releases.

Never miss a vulnerability like this again

Reference Links

https://kb.juniper.net/JSA11157

Frequently Asked Questions

What is CVE-2021-0266?
CVE-2021-0266 refers to a vulnerability in cSRX Series software in Juniper Networks Junos OS that allows an attacker to take control of any instance of a cSRX deployment through device management services.
Which versions of Juniper Networks Junos OS are affected by CVE-2021-0266?
CVE-2021-0266 affects all versions of Juniper Networks Junos OS on cSRX Series prior to 20.2R...
What is the severity of CVE-2021-0266?
The severity of CVE-2021-0266 is rated as critical, with a severity value of 9.8.
How can an attacker exploit CVE-2021-0266?
An attacker can exploit CVE-2021-0266 by taking advantage of the multiple hard-coded cryptographic keys in the cSRX Series software.
Is Juniper Csrx affected by CVE-2021-0266?
No, Juniper Csrx is not affected by CVE-2021-0266.

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canonical/juniper junos
version/juniper junos/20.2-r1
version/juniper junos/20.2-r1-s1
version/juniper junos/20.2-r1-s2
version/juniper junos/20.2-r1-s3
version/juniper junos/20.3-r1
version/juniper junos/20.3-r1-s1
version/juniper junos/20.4-r1
version/juniper junos/20.4-r1-s1
canonical/juniper csrx

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