CVE-2021-4457

CRITICALNVD 9.19.1—Trending — 3 sources updated this weekElevated

9.1

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

CVSS v3: 9.1
EG Score: 9.1(medium)
EPSS: 61.3%
KEV: Not listed

Published

June 25, 2025

Last Modified

July 7, 2025

References (1)

contact@wpscanhttps://wpscan.com/vulnerability/07259a61-8ba9-4dd0-8d52-cc1df389c0ad

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-434Unrestricted Upload of File with Dangerous Type

Data Freshness Timeline

(refreshed 12× in last 7d / 12× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-04 13:11 UTCepss_batch
2026-06-04 13:10 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-30 03:00 UTCEG score recompute
2026-05-30 03:00 UTCGHSA enrichment
2026-05-29 13:42 UTCepss_batch

Frequently asked(5)

What is CVE-2021-4457?

CVE-2021-4457 is a critical vulnerability published on June 25, 2025. The ZoomSounds plugin before 6.05 contains a PHP file allowing unauthenticated users to upload an arbitrary file anywhere on the web server.

When was CVE-2021-4457 disclosed?

CVE-2021-4457 was first published in the National Vulnerability Database on June 25, 2025, with the most recent update on July 7, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-4457 actively exploited?

CVE-2021-4457 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 61.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-4457?

CVE-2021-4457 has a CVSS v3 base score of 9.1 (NVD).

How do I remediate CVE-2021-4457?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-4457, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-4457

Explore →

Is Your Infrastructure Affected by CVE-2021-4457?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2021-4457

📅 Published

🔄 Last Modified

🔗 References (1)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-4457?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (1)

Frequently asked(5)

Related CVEs(same CWE)