CVE-2026-53408

Description

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.

CVSS v3.1 Score

8.1

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

EPSS — Exploit Prediction

0.0021

Probability of exploitation

0.11%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-939 CWE-939

Affected Products

Vendor	Product	Versions
zoom	meeting_software_development_kit	< 7.0.3
zoom	meeting_software_development_kit	< 7.0.4
zoom	workplace	< 7.0.3
zoom	workplace	< 7.0.4

References

Advisories & Patches

https://www.zoom.com/en/trust/security-bulletin/zsb-26010

Frequently Asked Questions

What is CVE-2026-53408? +

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. It has a CVSS v3.1 base score of 8.1 (HIGH).

How severe is CVE-2026-53408? +

CVE-2026-53408 has a CVSS v3.1 score of 8.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0021, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-53408? +

CVE-2026-53408 affects products from zoom, specifically: meeting_software_development_kit, workplace. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-53408? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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