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PatchSiren cyber security CVE debrief

CVE-2026-53407 Zoom Communications CVE debrief

CVE-2026-53407 is a HIGH-severity vulnerability (CVSS Score: 8.1) affecting Zoom Workplace. The vulnerability is caused by improper authorization in the handler for custom URL schemes in Zoom Workplace before version 7.0.4 for Android and before 7.0.3 for iOS. This vulnerability may allow an unauthenticated user to conduct an escalation of privilege via network access.

Vendor
Zoom Communications
Product
Zoom Workplace
CVSS
HIGH 8.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-12
Original CVE updated
2026-06-26
Advisory published
2026-06-12
Advisory updated
2026-06-26

Who should care

Users of Zoom Workplace on Android and iOS should update to the latest versions (7.0.4 for Android and 7.0.3 for iOS or later) to mitigate this vulnerability.

Technical summary

The vulnerability is caused by improper authorization in the handler for custom URL schemes in Zoom Workplace. This allows an unauthenticated user to potentially escalate privileges via network access.

Defensive priority

HIGH

Recommended defensive actions

  • Update Zoom Workplace to version 7.0.4 for Android and 7.0.3 for iOS or later.
  • Ensure that Zoom Workplace is properly configured and up-to-date.

Evidence notes

Vendor: Zoom (inferred from reference).

Sources and references

Verified primary and authoritative sources

  • CVE-2026-53407 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-53407

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-53407 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-53407

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.