Is CVE-2021-42120 actively exploited?

No active exploitation of CVE-2021-42120 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-42120 be exploited remotely?

Yes. CVE-2021-42120 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-42120?

CVE-2021-42120 has a CVSS score of 6.5 (MEDIUM).

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MEDIUM

CVE-2021-42120

CWE-20Published: November 30, 2021· Updated: Jun 17, 2026

6.5

CVSS v3.1

Official Description

Insufficient Input Validation in Web Applications operating on Business-DNA Solutions GmbH’s TopEase® Platform Version <= 7.1.27 on all object attributes allows an authenticated remote attacker with Object Modification privileges to insert arbitrarily long strings, eventually leading to exhaustion of the underlying resource.

NVD Source

Technical Analysis

CVE-2021-42120 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 6.5.