How severe is CVE-2026-4221?

CVE-2026-4221 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-4221 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-4221?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-4221 have an EU (EUVD) identifier?

Yes. CVE-2026-4221 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-12357.

When was CVE-2026-4221 published?

CVE-2026-4221 was published on 2026-03-16 and last updated on 2026-06-17.

CVE-2026-4221

CVE-2026-4221 is a high-severity vulnerability with a CVSS 3.x base score of 7.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-284.

Key facts

Severity: High (CVSS 3.x base score 7.3)
CVSS v2: 7.5
CVSS v4: 5.5
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-12357
Weakness: CWE-284
Published: 2026-03-16
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-4221?: CVE-2026-4221 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-4221 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-4221?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-4221 have an EU (EUVD) identifier?: Yes. CVE-2026-4221 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-12357.
When was CVE-2026-4221 published?: CVE-2026-4221 was published on 2026-03-16 and last updated on 2026-06-17.

References

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