How severe is CVE-2021-4457?

CVE-2021-4457 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2021-4457 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-4457?

CVE-2021-4457 affects Digitalzoomstudio Zoomsounds. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-4457?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2021-4457 have an EU (EUVD) identifier?

Yes. CVE-2021-4457 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-34682.

When was CVE-2021-4457 published?

CVE-2021-4457 was published on 2025-06-25 and last updated on 2026-06-17.

CVE-2021-4457

CVE-2021-4457 is a critical-severity vulnerability in Digitalzoomstudio Zoomsounds with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-434.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2021-34682
Weakness: CWE-434
Affected product: Digitalzoomstudio Zoomsounds
Published: 2025-06-25
Last modified: 2026-06-17

Description

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

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 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2021-4457 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-4457?: CVE-2021-4457 affects Digitalzoomstudio Zoomsounds. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-4457?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2021-4457 have an EU (EUVD) identifier?: Yes. CVE-2021-4457 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-34682.
When was CVE-2021-4457 published?: CVE-2021-4457 was published on 2025-06-25 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/07259a61-8ba9-4dd0-8d52-cc1df389c0ad

Affected products (1)

cpe:2.3:a:digitalzoomstudio:zoomsounds:*:*:*:*:*:wordpress:*:*

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