How severe is CVE-2018-10521?

CVE-2018-10521 has a CVSS 3.x base score of 2.7, rated low severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2018-10521 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-10521?

CVE-2018-10521 affects Cmsmadesimple Cms Made Simple. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-10521?

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

When was CVE-2018-10521 published?

CVE-2018-10521 was published on 2018-04-27 and last updated on 2026-06-17.

CVE-2018-10521

CVE-2018-10521 is a low-severity vulnerability in Cmsmadesimple Cms Made Simple with a CVSS 3.x base score of 2.7. 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-434.

Key facts

Severity: Low (CVSS 3.x base score 2.7)
CVSS v2: 4.0
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Cmsmadesimple Cms Made Simple
Published: 2018-04-27
Last modified: 2026-06-17

Description

In CMS Made Simple (CMSMS) through 2.2.7, the "file move" operation in the admin dashboard contains an arbitrary file movement vulnerability that can cause DoS, exploitable by an admin user, because config.php can be moved into an incorrect directory.

Frequently asked questions

What is CVE-2018-10521?: In CMS Made Simple (CMSMS) through 2.2.7, the "file move" operation in the admin dashboard contains an arbitrary file movement vulnerability that can cause DoS, exploitable by an admin user, because config.php can be moved into an incorrect directory.
How severe is CVE-2018-10521?: CVE-2018-10521 has a CVSS 3.x base score of 2.7, rated low severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2018-10521 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-10521?: CVE-2018-10521 affects Cmsmadesimple Cms Made Simple. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-10521?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-10521 published?: CVE-2018-10521 was published on 2018-04-27 and last updated on 2026-06-17.

References

https://github.com/itodaro/cmsms_cve/blob/master/README.md

Affected products (1)

cpe:2.3:a:cmsmadesimple:cms_made_simple:*:*:*:*:*:*:*:*

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