What is the severity of CVE-2021-33728?

The severity of CVE-2021-33728 is critical with a CVSS score of 7.2.

What software versions are affected by CVE-2021-33728?

All versions of Siemens SINEC NMS prior to V1.0 SP2 Update 1 are affected by CVE-2021-33728.

What is the vulnerability description of CVE-2021-33728?

CVE-2021-33728 is a vulnerability in SINEC NMS that allows a privileged attacker to exploit insecure deserialization of user-supplied content, potentially leading to remote code execution.

How can an attacker exploit CVE-2021-33728?

An attacker can exploit CVE-2021-33728 by uploading malicious JSON objects that are deserialized to JAVA objects, allowing them to execute arbitrary code.

Is there a fix available for CVE-2021-33728?

Siemens has released an update (V1.0 SP2 Update 1) to address the vulnerability in SINEC NMS. It is recommended to update to the latest version to mitigate the risk.

Vulnerability/
CVE-2021-33728

critical

CWE

502

12/10/2021

3/8/2024

CVE-2021-33728

First published: Tue Oct 12 2021(Updated: )

A vulnerability has been identified in SINEC NMS (All versions < V1.0 SP2 Update 1). The affected system allows to upload JSON objects that are deserialized to JAVA objects. Due to insecure deserialization of user-supplied content by the affected software, a privileged attacker could exploit this vulnerability by sending a crafted serialized Java object. An exploit could allow the attacker to execute arbitrary code on the device with root privileges.

Credit: productcert@siemens.com

Affected Software	Affected Version	How to fix
Siemens SINEC NMS	<1.0
Siemens SINEC NMS	=1.0
Siemens SINEC NMS	=1.0-sp1
Siemens SINEC NMS	=1.0-sp2

Remedy

https://cert-portal.siemens.com/productcert/pdf/ssa-163251.pdf

Never miss a vulnerability like this again

Reference Links

https://cert-portal.siemens.com/productcert/pdf/ssa-163251.pdf

Frequently Asked Questions

What is the severity of CVE-2021-33728?
The severity of CVE-2021-33728 is critical with a CVSS score of 7.2.
What software versions are affected by CVE-2021-33728?
All versions of Siemens SINEC NMS prior to V1.0 SP2 Update 1 are affected by CVE-2021-33728.
What is the vulnerability description of CVE-2021-33728?
CVE-2021-33728 is a vulnerability in SINEC NMS that allows a privileged attacker to exploit insecure deserialization of user-supplied content, potentially leading to remote code execution.
How can an attacker exploit CVE-2021-33728?
An attacker can exploit CVE-2021-33728 by uploading malicious JSON objects that are deserialized to JAVA objects, allowing them to execute arbitrary code.
Is there a fix available for CVE-2021-33728?
Siemens has released an update (V1.0 SP2 Update 1) to address the vulnerability in SINEC NMS. It is recommended to update to the latest version to mitigate the risk.

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version/siemens sinec nms/1.0-sp1
version/siemens sinec nms/1.0-sp2

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