How severe is CVE-2021-25857?

CVE-2021-25857 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-25857 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-25857?

CVE-2021-25857 affects Supermicro-cms Project Supermicro-cms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-25857?

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.

When was CVE-2021-25857 published?

CVE-2021-25857 was published on 2023-08-11 and last updated on 2026-06-17.

CVE-2021-25857

CVE-2021-25857 is a high-severity vulnerability in Supermicro-cms Project Supermicro-cms with a CVSS 3.x base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.2)
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Supermicro-cms Project Supermicro-cms
Published: 2023-08-11
Last modified: 2026-06-17

Description

An issue was discovered in pcmt superMicro-CMS version 3.11, allows authenticated attackers to execute arbitrary code via the font_type parameter to setup.php.

Frequently asked questions

What is CVE-2021-25857?: An issue was discovered in pcmt superMicro-CMS version 3.11, allows authenticated attackers to execute arbitrary code via the font_type parameter to setup.php.
How severe is CVE-2021-25857?: CVE-2021-25857 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-25857 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-25857?: CVE-2021-25857 affects Supermicro-cms Project Supermicro-cms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-25857?: 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.
When was CVE-2021-25857 published?: CVE-2021-25857 was published on 2023-08-11 and last updated on 2026-06-17.

References

https://github.com/pcmt/superMicro-CMS/issues/2

Affected products (1)

cpe:2.3:a:supermicro-cms_project:supermicro-cms:3.11:*:*:*:*:*:*:*

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