GCVE-110-NCSC-2026-249

Advisory PublishedCVSS 7.0/10

Vulnetix · Advisory published July 17, 2026

A TOCTOU race condition in the installation and uninstallation processes of certain Zoom Clients for Windows allows an authenticated local user to escalate privileges.

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Weaknesses (CWE)

CWE-367Time-of-check Time-of-use (TOCTOU) Race Condition

Risk Scores

CVSS 3.1

7.0/10

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

Affected Products

Vendor	Product	Versions	Platforms
Zoom Communications	vers:unknown/*	—	—
Zoom Video Communications	vers:unknown/*	—	—

Aliases

CVE-2026-53409 CVE-2026-53410 CVE-2026-53411 CVE-2026-53412

References

advisory

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