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CVE-2020-36847

Simplefilelist Simple File List remote code execution

9.8 CRITICALPublic exploitEPSS 45.3%
  1. Published12 Jul 2025

Description

The Simple-File-List Plugin for WordPress is vulnerable to Remote Code Execution in versions up to, and including, 4.2.2 via the rename function which can be used to rename uploaded PHP code with a png extension to use a php extension. This allows unauthenticated attackers to execute code on the server.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Simplefilelist Simple File List< 4.2.3

Remediation

Fixed in
Simplefilelist Simple File List≥ 4.2.3

References

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Frequently asked

Is CVE-2020-36847 being actively exploited?

CVE-2020-36847 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 45.3%.

How severe is CVE-2020-36847?

CVE-2020-36847 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 45.3% probability of exploitation.

Which products are affected by CVE-2020-36847?

Affected products include Simplefilelist Simple File List.

How do I fix CVE-2020-36847?

Upgrade affected software to a fixed version, for example Simplefilelist Simple File List 4.2.3 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2020-36847 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.