How severe is CVE-2021-36547?

CVE-2021-36547 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-2021-36547 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-36547?

CVE-2021-36547 affects Mara Cms Project Mara Cms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-36547?

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-2021-36547 published?

CVE-2021-36547 was published on 2021-10-28 and last updated on 2026-06-17.

CVE-2021-36547

CVE-2021-36547 is a critical-severity vulnerability in Mara Cms Project Mara Cms 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-434.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Mara Cms Project Mara Cms
Published: 2021-10-28
Last modified: 2026-06-17

Description

A remote code execution (RCE) vulnerability in the component /codebase/dir.php?type=filenew of Mara v7.5 allows attackers to execute arbitrary commands via a crafted PHP file.

Frequently asked questions

What is CVE-2021-36547?: A remote code execution (RCE) vulnerability in the component /codebase/dir.php?type=filenew of Mara v7.5 allows attackers to execute arbitrary commands via a crafted PHP file.
How severe is CVE-2021-36547?: CVE-2021-36547 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-2021-36547 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-36547?: CVE-2021-36547 affects Mara Cms Project Mara Cms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-36547?: 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-2021-36547 published?: CVE-2021-36547 was published on 2021-10-28 and last updated on 2026-06-17.

References

https://github.com/r0ck3t1973/RCE/issues/1

Affected products (1)

cpe:2.3:a:mara_cms_project:mara_cms:7.5:*:*:*:*:*:*:*

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