Description
Missing bounds check in the annotator function of Zoom Clients allows buffer over-read, which may allow a meeting participant to conduct a denial of service on another participant via network access.
Published: 2026-08-11
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The vulnerability is a missing bounds check in the Zoom Clients’ annotator function, enabling a buffer over‑read. This can lead to a denial of service against another participant when the attacker abuses network access during a meeting. The weakness is classified as CWE‑126: Buffer Over‑read.

Affected Systems

Zoom Communications Zoom Clients. The CVE refers to all Zoom Clients but does not list specific versions; the vendor product is Zoom Communications:Zoom Clients.

Risk and Exploitability

The CVSS score is 6.5, indicating moderate severity. The EPSS score of less than 1% suggests a low probability of exploitation, and it is not flagged in the CISA KEV catalog. The attack vector is inferred to be remote via network access during a meeting where the annotator function can be invoked by a participant. This requires the victim to be in the same meeting as the attacker.

Generated by OpenCVE AI on August 13, 2026 at 02:47 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Ensure all Zoom client installations are updated to the latest available version.
  • Disable or restrict annotation features for participants who do not require them to limit exposure.
  • Monitor meeting participants for suspicious activity and consider using meeting settings to limit interaction before a meeting is officially started.

Generated by OpenCVE AI on August 13, 2026 at 02:47 UTC.

Tracking

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Advisories

No advisories yet.

History

Thu, 13 Aug 2026 05:15:00 +0000

Type Values Removed Values Added
First Time appeared Zoom Communications
Zoom Communications zoom Clients
Vendors & Products Zoom Communications
Zoom Communications zoom Clients

Tue, 11 Aug 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 11 Aug 2026 16:15:00 +0000

Type Values Removed Values Added
Description Missing bounds check in the annotator function of Zoom Clients allows buffer over-read, which may allow a meeting participant to conduct a denial of service on another participant via network access.
Title Zoom Clients - Buffer Over-read
Weaknesses CWE-126
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

Subscriptions

Zoom Communications Zoom Clients
cve-icon MITRE

Status: PUBLISHED

Assigner: Zoom

Published:

Updated: 2026-08-11T16:55:01.452Z

Reserved: 2026-06-09T10:18:05.660Z

Link: CVE-2026-53414

cve-icon Vulnrichment

Updated: 2026-08-11T16:54:01.022Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-08-11T16:17:32.713

Modified: 2026-08-28T18:39:48.167

Link: CVE-2026-53414

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-13T05:00:10Z

Weaknesses