#VU56618 Use-after-free in NX 1980 - CVE-2021-37202

Vulnerability identifier: #VU56618

Vulnerability risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-37202

CWE-ID: CWE-416

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
NX 1980
Hardware solutions / Routers for home users

Vendor: Siemens

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in the IFC adapter when parsing user-supplied IFC files. A remote attacker can execute arbitrary code on the target system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

NX 1980: before 1984

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External links
https://cert-portal.siemens.com/productcert/pdf/ssa-208530.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.