Is CVE-2021-44164 actively exploited?

No active exploitation of CVE-2021-44164 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-44164 be exploited remotely?

Yes. CVE-2021-44164 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-44164?

CVE-2021-44164 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2021-44164

CWE-434Published: December 20, 2021· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Chain Sea ai chatbot system’s file upload function has insufficient filtering for special characters in URLs, which allows a remote attacker to by-pass file type validation, upload malicious script and execute arbitrary code without authentication, in order to take control of the system or terminate service.

NVD Source

Technical Analysis

CVE-2021-44164 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), availability disruption (denial of service), with a CVSS base score of 9.8.