CVE-2021-4457

Name: CVE-2021-4457
Creator: NVD / NIST
Published: 2025-06-25T15:15:21.1+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 0.38%

Last modified Jun 17, 2026

CVE-2021-4457 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. The ZoomSounds plugin before 6.05 contains a PHP file allowing unauthenticated users to upload an arbitrary file anywhere on the web server.. EPSS estimates a 0.38% chance of exploitation in the next 30 days.

Description

The ZoomSounds plugin before 6.05 contains a PHP file allowing unauthenticated users to upload an arbitrary file anywhere on the web server.

Metrics

CVSS 3.1

9.1/10

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

EPSS Probability

0.38%

30.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-434

Affected Software

Vendor	Product	Versions
Digitalzoomstudio	Zoomsounds	< 6.05

References

https://wpscan.com/vulnerability/07259a61-8ba9-4dd0-8d52-cc1df389c0adExploit, Third Party Advisory

Timeline

Published: Jun 25, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2021-4457?

The ZoomSounds plugin before 6.05 contains a PHP file allowing unauthenticated users to upload an arbitrary file anywhere on the web server.

How severe is CVE-2021-4457?

CVE-2021-4457 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 0.38% probability of exploitation in the next 30 days.

How do I fix CVE-2021-4457?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-4457?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST