CVE-2025-30663

Local privilege escalation via TOCTOU race

Published May 14, 2025 · Updated Feb 26, 2026

TOCTOU race condition in Zoom Workplace Apps allows local users with existing access to escalate privileges on supported devices. Zoom has not disclosed the checked resource, competing operation, or code locus that creates the race. Exploitation requires authenticated local access and winning the race; success grants privileges beyond those assigned to the local account.

CVSS severity8.8
High
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

TOCTOU race condition in Zoom Workplace Apps allows local users with existing access to escalate privileges on supported devices. Zoom has not disclosed the checked resource, competing operation, or code locus that creates the race. Exploitation requires authenticated local access and winning the race; success grants privileges beyond those assigned to the local account.

The record

CVE
CVE-2025-30663
Published
May 14, 2025
Updated
Feb 26, 2026
Vendor
Zoom Video Communications, Inc.
Product
Zoom Workplace Apps
Classifications
CWE-367, CAPEC-29, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 14, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=see references

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Zoom Video Communications, Inc. · Zoom Workplace Appsversion=see references

Published CVSS scores

8.8ZoomCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
7.0NVDCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-367Time-of-check Time-of-use (TOCTOU) Race Condition
CAPEC-29Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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