Is CVE-2021-42115 actively exploited?

No active exploitation of CVE-2021-42115 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-42115 be exploited remotely?

Yes. CVE-2021-42115 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-42115?

CVE-2021-42115 has a CVSS score of 9.1 (CRITICAL).

HOME VULNERABILITIESCVE-2021-42115

CRITICAL

CVE-2021-42115

CWE-1004Published: November 30, 2021· Updated: Jun 17, 2026

9.1

CVSS v3.1

Official Description

Missing HTTPOnly flag in Web Applications operating on Business-DNA Solutions GmbH’s TopEase® Platform Version <= 7.1.27 allows an unauthenticated remote attacker to escalate privileges from unauthenticated to authenticated user via stealing and injecting the session- independent and static cookie UID.

NVD Source

Technical Analysis

CVE-2021-42115 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 9.1.