CVE-2026-40058CWE-367

CVE-2026-40058

High · published September 15, 2026

CVSS v3.1
8.8
EPSS
0%
Percentile
0.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00084 · 0.2th percentile
Weakness
CWE-367 · Time-of-check Time-of-use (TOCTOU) Race Condition
Published
2026-09-15T22:17Z
References (1)
EPSS history
Timeline
  • 17 SEP 03:30Z
    EPSS moved — → 0%
    epss
  • 15 SEP 17:47Z
    Vulnerability Affecting Office Macro Removal in CrowdStrike Falcon Sensor for Windows
    cvelistv5