How severe is CVE-2026-2666?

CVE-2026-2666 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-2666 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-2666?

CVE-2026-2666 affects Mingsoft Mcms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-2666?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-2666 have an EU (EUVD) identifier?

Yes. CVE-2026-2666 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-7637.

When was CVE-2026-2666 published?

CVE-2026-2666 was published on 2026-02-18 and last updated on 2026-06-17.

CVE-2026-2666

CVE-2026-2666 is a medium-severity vulnerability in Mingsoft Mcms with a CVSS 3.x base score of 4.7. 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: Medium (CVSS 3.x base score 4.7)
CVSS v2: 5.8
CVSS v4: 2.0
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-7637
Weakness: CWE-284
Affected product: Mingsoft Mcms
Published: 2026-02-18
Last modified: 2026-06-17

Description

A flaw has been found in mingSoft MCMS 6.1.1. The affected element is an unknown function of the file /ms/file/uploadTemplate.do of the component Template Archive Handler. Executing a manipulation of the argument File can lead to unrestricted upload. The attack can be launched remotely. The exploit has been published and may be used.

Frequently asked questions

What is CVE-2026-2666?: A flaw has been found in mingSoft MCMS 6.1.1. The affected element is an unknown function of the file /ms/file/uploadTemplate.do of the component Template Archive Handler. Executing a manipulation of the argument File can lead to unrestricted upload. The attack can be launched remotely. The exploit has been published and may be used.
How severe is CVE-2026-2666?: CVE-2026-2666 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-2666 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-2666?: CVE-2026-2666 affects Mingsoft Mcms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-2666?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-2666 have an EU (EUVD) identifier?: Yes. CVE-2026-2666 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-7637.
When was CVE-2026-2666 published?: CVE-2026-2666 was published on 2026-02-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mingsoft:mcms:6.1.1:*:*:*:*:*:*:*

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