How severe is CVE-2021-37270?

CVE-2021-37270 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-37270 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-37270?

CVE-2021-37270 affects S-cms Cms Enterprise Website Construction System. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-37270?

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

When was CVE-2021-37270 published?

CVE-2021-37270 was published on 2021-09-27 and last updated on 2026-06-17.

CVE-2021-37270

CVE-2021-37270 is a critical-severity vulnerability in S-cms Cms Enterprise Website Construction System with a CVSS 3.x base score of 9.8. 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-862.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: S-cms Cms Enterprise Website Construction System
Published: 2021-09-27
Last modified: 2026-06-17

Description

There is an unauthorized access vulnerability in the CMS Enterprise Website Construction System 5.0. Attackers can use this vulnerability to directly access the specified background path without logging in to the background to obtain the background administrator authority.

Frequently asked questions

What is CVE-2021-37270?: There is an unauthorized access vulnerability in the CMS Enterprise Website Construction System 5.0. Attackers can use this vulnerability to directly access the specified background path without logging in to the background to obtain the background administrator authority.
How severe is CVE-2021-37270?: CVE-2021-37270 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-37270 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-37270?: CVE-2021-37270 affects S-cms Cms Enterprise Website Construction System. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-37270?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-37270 published?: CVE-2021-37270 was published on 2021-09-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:s-cms:cms_enterprise_website_construction_system:5.0:*:*:*:*:*:*:*

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