Is CVE-2022-4221 actively exploited?

No active exploitation of CVE-2022-4221 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2022-4221 be exploited remotely?

Yes. CVE-2022-4221 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2022-4221?

CVE-2022-4221 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2022-4221

CWE-78Published: December 1, 2022· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in Asus NAS-M25 allows an unauthenticated attacker to inject arbitrary OS commands via unsanitized cookie values.This issue affects NAS-M25: through 1.0.1.7.

NVD Source

Risk Analysis

Asus NAS-M25 devices are vulnerable to OS command injection via unsanitized cookie values. An unauthenticated remote attacker can execute arbitrary commands, resulting in a critical CVSS score of 9.8.

There is no public exploit known, and it is not in the KEV catalog. The vulnerability is remotely exploitable with low attack complexity.

Recommended Action

Update the NAS-M25 firmware to a version beyond 1.0.1.7 to remediate the command injection vulnerability.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2022-4221 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.