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Crowdstrike EUVDEUVD-2026-79123

| CVE-2026-40058 HIGH
Time-of-check Time-of-use (TOCTOU) Race Condition (CWE-367)
2026-09-15 CrowdStrike GHSA-437q-4cw6-qcwj
8.8
CVSS 3.1 · Vendor: CrowdStrike
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Severity by source

Vendor (CrowdStrike) PRIMARY
8.8 HIGH
AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Primary rating from Vendor (CrowdStrike) · only source for this CVE.

CVSS VectorVendor: CrowdStrike

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Patch available
Sep 15, 2026 - 19:04 EUVD
Analysis Generated
Sep 15, 2026 - 18:31 vuln.today
CVE Published
Sep 15, 2026 - 17:47 cve.org
HIGH 8.8

DescriptionCVE.org

CrowdStrike released a security update to address a vulnerability in the Falcon sensor for Windows. The vulnerability only exists when the Microsoft Office File Malicious Macro Removal Windows policy setting is enabled and customers remain protected through the Cloud Anti-malware for Microsoft Office Files settings.

An update is available immediately for versions 7.34 and above, 7.32 LTS, and 7.16 for Windows 7/2008 R2 systems. The Falcon sensor for Mac, Linux, and Legacy Systems are not affected.

This vulnerability could expose an arbitrary file write to protected locations from an unprivileged context, potentially leading to local privilege escalation.

The CrowdStrike Laroux Malware Cleanup Tool, based off of the same feature in the CrowdStrike Falcon sensor for Windows, is also affected. An update for this tool is also available immediately.

AnalysisAI

Local privilege escalation in the CrowdStrike Falcon sensor for Windows occurs when the Microsoft Office File Malicious Macro Removal policy setting is enabled, letting an unprivileged process race the sensor's macro-cleanup file operation (CWE-367) and write arbitrary files to protected locations, ultimately reaching SYSTEM-level privileges. Affected builds are the Falcon sensor for Windows at 7.34 and above, the 7.32 LTS line, and 7.16 on Windows 7/2008 R2; the CrowdStrike Laroux Malware Cleanup Tool is also affected, while Mac, Linux, and Legacy sensor platforms are not. …

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EUVD-2026-79123 vulnerability details – vuln.today

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