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CVE-2021-4457

Digitalzoomstudio Zoomsounds unrestricted file upload

9.1 CRITICALPublic exploitEPSS 0.44%
  1. Published25 Jun 2025

Description

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

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

Digitalzoomstudio Zoomsounds< 6.05

Remediation

Fixed in
Digitalzoomstudio Zoomsounds≥ 6.05

References

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Frequently asked

Is CVE-2021-4457 being actively exploited?

CVE-2021-4457 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.44%.

How severe is CVE-2021-4457?

CVE-2021-4457 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 0.44% probability of exploitation.

Which products are affected by CVE-2021-4457?

Affected products include Digitalzoomstudio Zoomsounds.

How do I fix CVE-2021-4457?

Upgrade affected software to a fixed version, for example Digitalzoomstudio Zoomsounds 6.05 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2021-4457 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.