Zoom Windows Client Vulnerabilities Including Critical Privilege Escalation
Zoom published security advisories on March 10, 2026 addressing multiple vulnerabilities affecting Windows components, including Zoom Workplace for Windows, Zoom Meeting SDK for Windows, Zoom Rooms for Windows, and the Zoom Workplace VDI Client for Windows. The Canadian Centre for Cyber Security advisory AV26-231 urged organizations to review Zoom’s bulletins and apply updates, noting issues spanning external control of file name or path, improper privilege management, improper input validation, and an improper check condition across the affected Windows products and versions.
Reporting on the same Zoom bulletin set, one write-up highlighted four Windows-side flaws ranging from High to Critical severity, including a Critical issue in the Zoom Workplace for Windows Mail feature tracked as CVE-2026-30903 (ZSB-26005), described as an External Control of File Name or Path weakness that could enable unauthenticated remote privilege escalation. The additional disclosed issues were described as CVE-2026-30902 (ZSB-26004) affecting Zoom Clients for Windows (Improper Privilege Management), CVE-2026-30901 (ZSB-26003) affecting Zoom Rooms for Windows (Improper Input Validation), and CVE-2026-30900 (ZSB-26002) affecting Zoom Workplace Clients for Windows (Improper Check), with remediation requiring upgrading to fixed releases per Zoom’s advisories.
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