Vulnerability identifier: #VU56626

Vulnerability risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-37181

CWE-ID: CWE-502

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Desigo CC
Server applications / SCADA systems
Desigo CC Compact
Server applications / SCADA systems
Cerberus DMS
Server applications / SCADA systems

Vendor: Siemens

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insecure input validation when processing serialized data in the CCOM communication component. A remote attacker can pass specially crafted data to the application and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Desigo CC: 4.0 - 5.0

Desigo CC Compact: 4.0 - 5.0

Cerberus DMS: 4.0 - 5.0

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External links
http://cert-portal.siemens.com/productcert/pdf/ssa-453715.pdf

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.