CVE-2026-40058

Summary

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.

Affected Software

VendorProductVersion RangeStatus
CrowdStrikeFalcon sensor for Windows8.10.0 < 8.10.21408affected
CrowdStrikeFalcon sensor for Windows7.40.0 < 7.40.21309affected
CrowdStrikeFalcon sensor for Windows7.39.0 < 7.39.21113affected
CrowdStrikeFalcon sensor for Windows7.38.0 < 7.38.21007affected
CrowdStrikeFalcon sensor for Windows7.37.0 < 7.37.20912affected
CrowdStrikeFalcon sensor for Windows7.36.0 < 7.36.20807affected
CrowdStrikeFalcon sensor for Windows7.35.0 < 7.35.20712affected
CrowdStrikeFalcon sensor for Windows7.34.0 < 7.34.20613affected
CrowdStrikeFalcon sensor for Windows7.33.0affected
CrowdStrikeFalcon sensor for Windows7.32.0 < 7.32.20410affected
CrowdStrikeFalcon sensor for Windows7.16.0 < 7.16.18644affected
CrowdStrikeLaroux Cleanup Tool1.0.20 < 1.4.70.0affected

Weaknesses

  • CWE-367: CWE-367 Time-of-check time-of-use (TOCTOU) race condition

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

References