Is CVE-2021-40954 actively exploited?

No active exploitation of CVE-2021-40954 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-40954 be exploited remotely?

Yes. CVE-2021-40954 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-40954?

CVE-2021-40954 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2021-40954

CWE-434Published: June 23, 2022· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Laiketui 3.5.0 is affected by an arbitrary file upload vulnerability that can allow an attacker to execute arbitrary code.

NVD Source

Risk Analysis

Laiketui 3.5.0 is vulnerable to arbitrary file uploads, which can be leveraged by an attacker to achieve remote code execution. This flaw presents a critical risk as it allows full system compromise.

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

Recommended Action

Apply available security updates from the vendor. Restrict file upload functionality to trusted users and validate file types on the server side.

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-2021-40954 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.