What is CVE-2026-4221?

CVE-2026-4221 is a high-severity vulnerability in Tiandy Easy7 Integrated Management Platform, classified under Improper Access Control. CVSS score: 7.3/10. Published 2026-03-16.

How severe is CVE-2026-4221?

High severity. CVSS v3 base score is 7.3 out of 10.

Arbitrary file upload in Tiandy Easy7 Integrated Management Platform

CVE-2026-4221

A vulnerability was found in Tiandy Easy7 Integrated Management Platform 7.17.0. This affects an unknown part of the file /rest/file/uploadLedImage of the component Endpoint. The manipulation of the argument File results in unrestricted upload. The attack may be launched remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

Published 2026-03-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.005 (38.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002

Affected products

Tiandy Easy7 Integrated Management Platform — versions 7.17.0

Weakness classification (CWE)

References

vuldb.com/ (technical-description, vdb-entry)
vuldb.com/ (signature, permissions-required)
vuldb.com/ (third-party-advisory)
my.feishu.cn/docx/Z5HJdLCxioFs4sxyILbcoSIAnTh (exploit)

Frequently asked questions

What is CVE-2026-4221?: CVE-2026-4221 is a high-severity vulnerability in Tiandy Easy7 Integrated Management Platform, classified under Improper Access Control. CVSS score: 7.3/10. Published 2026-03-16.
How severe is CVE-2026-4221?: High severity. CVSS v3 base score is 7.3 out of 10.