CVE-2026-53420 - Vulnerability Details - OpenCVE

Description

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.

Published: 2026-10-13

Score: 8 High

EPSS: n/a

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Zoom Communications

Zoom Workplace

unaffected

Version	Status	Constraints
`0`	affected	< 7.2.0

No data.

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

No advisories yet.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required Low

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact total

References

Link	Providers
https://www.zoom.com/en/trust/security-bulletin/zsb-26020

History

Tue, 13 Oct 2026 16:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Tue, 13 Oct 2026 14:30:00 +0000

Type	Values Removed	Values Added
Description		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.
Weaknesses		CWE-120
References		https://www.zoom.com/en/trust/security-bulletin/zsb-26020
Metrics		cvssV3_1 `{'score': 8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H'}`

Subscriptions

No data.

MITRE

Status: PUBLISHED

Assigner: Zoom

Published: 2026-10-13T14:22:00.033Z

Updated: 2026-10-13T15:49:46.731Z

Reserved: 2026-06-09T10:18:05.661Z

Link: CVE-2026-53420

Vulnrichment

Updated: 2026-10-13T15:40:49.487Z

NVD

Status : Awaiting Analysis

Published: 2026-10-13T15:17:44.753

Modified: 2026-10-13T16:53:44.693

Link: CVE-2026-53420

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-120

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