CVE-2021-47965

Description

WordPress Plugin WP Super Edit 2.5.4 and earlier contains an unrestricted file upload vulnerability in the FCKeditor component that allows attackers to upload dangerous file types without validation. Attackers can upload arbitrary files through the filemanager upload endpoint to achieve remote code execution and complete system compromise.

Overview

State

—

Assigner (CNA)

—

CVSS severity

critical

CVSS score

9.8 / 10

CVSS vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Effective score

9.8 / 10 CRITICAL source: CNA overview

CWE(s)

—

Reserved

—

Published

—

Last updated

—

Source

https://www.tenable.com/cve/CVE-2021-47965

Linked Threat

CVE-2021-47965 — WP Super Edit <= 2.5.4 - Unauthenticated Arbitrary File Upload

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published

2026-05-15 19:16:56 UTC

NVD last modified

2026-05-18 17:05:46 UTC

NVD CVSS v3.1

9.8 / 10 CRITICAL source: disclosure@vulncheck.com

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability subscore

3.9 / 10

Impact subscore

5.9 / 10

EPSS score

0.0032 (probability of exploitation in next 30 days)

EPSS percentile

55.08% vs all CVEs — higher = more likely to be exploited, as of 2026-05-24

NVD-assigned CWE(s): CWE-434 (differs from the CNA list above)

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID

EUVD-2021-34820

Assigner

VulnCheck

Published

May 15, 2026, 6:36:31 PM

Updated

May 25, 2026, 11:41:17 PM

EUVD base score (CVSS 4.0)

9.3 / 10
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

EUVD-reported EPSS

0.3200

Vendors

wp-super-edit

Products

WP Super Edit (0 ≤2.5.4)

WP Super Edit (2.5.4)

Aliases

GHSA-7wfw-gfch-rf74

ENISA description: WordPress Plugin WP Super Edit 2.5.4 and earlier contains an unrestricted file upload vulnerability in the FCKeditor component that allows attackers to upload dangerous file types without validation. Attackers can upload arbitrary files through the filemanager upload endpoint to achieve remote code execution and complete system compromise.

Vendor references (0)

References embedded in the original CVE record by the assigning CNA.

None in the CVE record.

Web references (7)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

• https://nvd.nist.gov/vuln/detail/CVE-2021-47965 tenable:nvd.nist.gov
• https://wordpress.org tenable:wordpress.org
• https://wordpress.org/plugins/wp-super-edit/ tenable:wordpress.org
• https://www.cve.org/CVERecord?id=CVE-2021-47965 tenable:www.cve.org
• https://www.exploit-db.com/exploits/49839 tenable:www.exploit-db.com
• https://www.first.org/epss/ tenable:www.first.org
• https://www.vulncheck.com/advisories/wordpress-plugin-wp-super-edit-unrestricted-file-upload tenable:www.vulncheck.com

Indicators (1)

IOCs linked to the auto-promoted Threat row.

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

• Wordfence remediation: WP Super Edit
  Wordfence

  No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.

  2026-07-30 02:53 UTC
• CVE-2021-47965 : Unrestricted File Upload Vulnerability in WP Super ...
  web:securityvulnerability.io

  What is CVE-2021-47965 ? The WP Super Edit plugin versions 2.5.4 and earlier for WordPress is susceptible to an unrestricted file upload vulnerability in the FCKeditor component.

  2026-05-26 02:56 UTC
• Critical Patches Issued for Microsoft Products, May 12, 2026
  web:www.cisecurity.org

  <p>Multiple vulnerabilities have been discovered in Microsoft products, the most severe of which could allow for remote code execution. Successful exploitation of the most severe of these vulnerabilities could result in an attacker gaining the same privileges as the logged-on user. Depending on the privileges associated with the user, an attacker could then install programs; view, change, or ...

  2026-05-26 02:56 UTC
• Microsoft is working on a patch for 'YellowKey ... - Computerworld
  web:www.computerworld.com

  Microsoft says it is considering a patch for a zero-day vulnerability, dubbed YellowKey, that allows attackers with access to a Windows device to bypass Bitlocker encryption protection and read ...

  2026-05-26 02:56 UTC
• How to Fix the "Your Device Is Missing Important Security and Quality ...
  web:www.howtogeek.com

  In this case, use your PC's built-in Windows Update troubleshooter to automatically find and fix issues with your updates. Only a little interaction is required from your end. To run that tool, go to Settings > Update & Security > Troubleshoot > Additional Troubleshooters > Windows Update and click "Run the Troubleshooter".

  2026-05-26 02:56 UTC
• Security Update Guide - Microsoft
  web:portal.msrc.microsoft.com

  The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.

  2026-05-26 02:56 UTC
• Critical Patch Updates, Critical Security Patch Updates ... - Oracle
  web:www.oracle.com

  Critical Security Patch Updates Critical Security Patch Updates provide security patches for supported Oracle on-premises products. A Critical Security Patch Update provides targeted, high-priority security fixes in a smaller, more focused format, making them easier to apply with minimal disruption.

  2026-05-26 02:56 UTC
• Microsoft Warns: Windows Zero-Day 'YellowKey' Can Bypass BitLocker
  web:www.techrepublic.com

  Microsoft has released a temporary mitigation for YellowKey, a Windows zero-day that can reportedly bypass BitLocker protections.

  2026-05-26 02:56 UTC
• Windows 11 KB5083769 update triggers BitLocker recovery | Windows Central
  web:www.windowscentral.com

  A faulty BitLocker configuration is forcing some PCs into BitLocker recovery mode after the April 2026 update, but there's a workaround to resolve this issue.

  2026-05-26 02:56 UTC
• Windows 11 April 2026 Update tested: What's new, improved and fixed
  web:www.windowslatest.com

  Windows 11 April 2026 update adds Narrator Copilot support, faster Settings, File Explorer fixes, and key security improvements.

  2026-05-26 02:56 UTC
• National Vulnerability Database | NIST
  web:www.nist.gov

  NIST maintains the National Vulnerability Database (NVD), a repository of information on software and hardware flaws that can compromise computer security. This is a key piece of the nation's cybersecurity infrastructure.

  2026-05-26 02:56 UTC

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