PatchTheCVECVE-2021-4449: The ZoomSounds plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validatio
CVE-2021-4449 is a critical-severity flaw (CVSS 9.8) affecting zoomsounds. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The ZoomSounds plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'savepng.php' file in versions up to, and including, 5.96. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible. CVE-2021-4457 is a duplicate of this.
Why this priority
- Critical severity
- EPSS top 7%: very likely to be exploited
- Public exploit reference
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 5.4% (top 7%) |
| CISA exploited list | No |
| Weakness | CWE-434 |
| Published | 2024-10-16 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- Nuclei scan template: ZoomSounds Plugin - Unauthenticated Arbitrary File Upload
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2021-4449?
zoomsounds: upgrade to newer than 5.96. Exact commands for each OS are on this page.
Is CVE-2021-4449 being exploited?
CVE-2021-4449 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2021-4449 affect?
CVE-2021-4449 affects zoomsounds. Severity is critical (CVSS 9.8). The ZoomSounds plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'savepng.php' file in versions up to, and including, 5.96. This makes it possible for unauthenticated attackers to upload
How urgent is CVE-2021-4449?
Priority 67/100. Critical severity; EPSS top 7%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action
Software pages
WordPress vulnerabilities · PHP vulnerabilities
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- CVE-2021-4457 CRITICAL 9.1 UPGRADE The ZoomSounds plugin before 6.05 contains a PHP file allowing unauthenticated users to upload an arbitrary fi