Is CVE-2021-40853 actively exploited?

No active exploitation of CVE-2021-40853 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-40853 be exploited remotely?

Yes. CVE-2021-40853 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-40853?

CVE-2021-40853 has a CVSS score of 7.2 (HIGH).

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HIGH

CVE-2021-40853

CWE-862Published: December 17, 2021· Updated: Jun 17, 2026

7.2

CVSS v3.1

Official Description

TCMAN GIM does not perform an authorization check when trying to access determined resources. A remote attacker could exploit this vulnerability to access URL that require privileges without having them. The exploitation of this vulnerability might allow a remote attacker to obtain sensible information.

NVD Source

Technical Analysis

CVE-2021-40853 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.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.