CVE-2026-40058: Vulnerability Affecting Office Macro Removal in CrowdStrike Falcon Sensor for Windows

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.

• CrowdStrike · Falcon sensor for Windowsfrom 8.10.0 before 8.10.21408; from 7.40.0 before 7.40.21309; from 7.39.0 before 7.39.21113; from 7.38.0 before 7.38.21007; from 7.37.0 before 7.37.20912; from 7.36.0 before 7.36.20807 and 4 more
• CrowdStrike · Falcon sensor for Windowsfrom 7.16.0 before 7.16.18644
• CrowdStrike · Laroux Cleanup Toolfrom 1.0.20 before 1.4.70.0

Exploitation

Unlikely (under 1%). EPSS under 1%, or no score yet.

CISA KEV

Not listed

Public check

No public nuclei template

Weakness

Time-of-check Time-of-use (TOCTOU) Race Condition · Race Conditions

Vendor

CrowdStrike

Published

September 2026

Band

Unlikely (under 1%), September 2026

• NVD entrynvd.nist.gov
• CVE recordcve.org
• Weakness CWE-367cwe.mitre.org
• crowdstrike.com/en-us/security-advisories/cve-2026-40058crowdstrike.com