Arbitrary File Upload Vulnerability in ZoomSounds Plugin by WordPress
CVE-2021-4457

9.1CRITICAL

Key Information:

Vendor

WordPress
Status
Zoomsounds
Vendor
CVE Published:
25 June 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-4457?

The ZoomSounds plugin for WordPress prior to version 6.05 contains a flaw that permits unauthenticated users to upload arbitrary files to the web server. This vulnerability poses a serious risk as it allows attackers to potentially place malicious files on the server, which can be executed to compromise the site or further exploit the server. Website owners using this plugin are advised to update to the latest version to mitigate the risk.

Affected Version(s)

ZoomSounds 0 < 6.05

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2021-4457 - Proof of Concept

References

https://wpscan.com/vulnerability/07259a61-8ba9-4dd0-8d52-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

ganj
WPScan
.