Is CVE-2021-44056 actively exploited?

No active exploitation of CVE-2021-44056 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-44056 be exploited remotely?

Yes. CVE-2021-44056 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-44056?

CVE-2021-44056 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2021-44056

CWE-287Published: May 5, 2022· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

An improper authentication vulnerability has been reported to affect QNAP device running Video Station. If exploited, this vulnerability allows attackers to compromise the security of the system. We have already fixed this vulnerability in the following versions of Video Station: Video Station 5.5.9 and later Video Station 5.3.13 and later Video Station 5.1.8 and later

NVD Source

Technical Analysis

CVE-2021-44056 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.

From a weakness classification perspective (CWE-287): Authentication bypass vulnerabilities allow attackers to access protected resources without valid credentials.