CVE-2026-53420

HIGH CVSS 3.1: 8.0 EPSS 0.32%
Updated Oct 14, 2026
Zoom
Parameter Value
CVSS 8.0 (HIGH)
Type CWE-120 (Buffer Copy without Checking Size)
Vendor Zoom
Public PoC No

Buffer overflow in a Zoom Phone feature of Zoom Workplace Clients may allow an unauthenticated user to conduct a escalation of privilege via network access.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
Required
User action required

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1