Security readout for executives and security teams
Plain-English summary
CVE-2021-24370 affects the Fancy Product Designer WordPress plugin before 4.6.9. An unauthenticated attacker could upload arbitrary files and gain remote code execution, meaning a vulnerable public website could be taken over. Public sources reported active attacks in 2021; the bundle does not prove current exploitation.
Executive priority
Treat this as urgent for any public WordPress site using the plugin. Unauthenticated RCE can create full site compromise, data theft, defacement, malware hosting, or pivot risk.
Technical view
The issue is CWE-434: unrestricted upload of dangerous files in Fancy Product Designer before 4.6.9. The CVE description states unauthenticated arbitrary file upload leading to RCE. The bundle lacks CVSS, CPEs, and detailed vendor remediation beyond the version boundary.
Likely exposure
Exposure is most likely on internet-facing WordPress sites using Fancy Product Designer versions earlier than 4.6.9. Risk is highest where the plugin is enabled on public product customization or upload workflows.
Exploitation context
Wordfence and SecPod sources describe this as a critical zero-day under active attack in June 2021. The provided bundle says KEV is false and gives no evidence of current active exploitation.
Researcher notes
The source bundle supports pre-4.6.9 impact, CWE-434 classification, and historical exploitation reports. It does not include exploit mechanics, CVSS scoring, CPE mapping, or proof of current exploitation.
Mitigation direction
- Upgrade Fancy Product Designer to 4.6.9 or later.
- Disable or remove the plugin until it is confirmed patched.
- Check vendor and WordPress plugin guidance for any additional cleanup steps.
- Review site files and uploads for unexpected executable content.
- Ensure backups are available before remediation work.
Validation and detection
- Inventory WordPress sites for Fancy Product Designer installations.
- Confirm installed plugin versions are 4.6.9 or later.
- Check webroot and upload directories for suspicious recent files.
- Review web server and WordPress logs around June 2021 onward.
- Look for unknown admin users or unexpected plugin/theme changes.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-434: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-24370 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://wpscan.com/vulnerability/82c52461-1fdc-41e4-9f51-f9dd84962b38CVE reference
- https://www.wordfence.com/blog/2021/06/critical-0-day-in-fancy-product-designer-under-active-attack/CVE reference
- https://lists.openwall.net/full-disclosure/2020/11/17/2CVE reference
- https://seclists.org/fulldisclosure/2020/Nov/30CVE reference
- https://www.secpod.com/blog/critical-zero-day-flaw-actively-exploited-in-wordpress-fancy-product-designer-plugin/CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Unrestricted Upload of File with Dangerous Type
Unrestricted Upload of File with Dangerous Type represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.