What is CVE-2026-53407?

CVE-2026-53407 is a high-severity vulnerability in Zoom Workplace, classified under CWE-939. CVSS score: 8.1/10. Published 2026-06-12.

How severe is CVE-2026-53407?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in Zoom Workplace

CVE-2026-53407

Improper Authorization in Handler for Custom URL Scheme in Zoom Workplace before version 7.0.4 for Android and before 7.0.3 for iOS may allow an unauthenticated user to conduct an escalation of privilege via network access.

Published 2026-06-12 · last modified 2026-10-25.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.002 (13.8th percentile), scored 2026-10-28.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 13.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.002 · change: -0.002

Affected products

Zoom Workplace
Zoom Communications Workplace — versions 0

Weakness classification (CWE)

CWE-939

References

www.zoom.com/en/trust/security-bulletin/zsb-26010 (Vendor Advisory)

Frequently asked questions

What is CVE-2026-53407?: CVE-2026-53407 is a high-severity vulnerability in Zoom Workplace, classified under CWE-939. CVSS score: 8.1/10. Published 2026-06-12.
How severe is CVE-2026-53407?: High severity. CVSS v3 base score is 8.1 out of 10.