CVE-2026-40058 — Vulnerability Affecting Office Macro Removal in CrowdStrike Falcon Sensor for Windows
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.
Who exploits it and how urgent it is
A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.
How the score was calculated
- Technical severity (high)+6
The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).
Triage
Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.
CISA SSVC assessment CISA
Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.
Remediation
Fixes and mitigations documented by the sources — linked to the original advisory.
No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.
First 24 hours
Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.
- Identify exposed assets running the affected vendor/product/version combinations (CrowdStrike Falcon sensor for Windows, CrowdStrike Laroux Cleanup Tool).
- No fix documented in the sources: reduce exposure and monitor the vendor advisory.
- Search available logs for exploit probes matching the vulnerability class (logic error), errors and authentication anomalies.
Affected scope
Vendor, product and versions as the sources word them.
| Vendor | Product | Versions | Status | Source |
|---|---|---|---|---|
| CrowdStrike | Falcon sensor for Windows |
≥ 8.10.0 and < 8.10.21408≥ 7.40.0 and < 7.40.21309≥ 7.39.0 and < 7.39.21113≥ 7.38.0 and < 7.38.21007≥ 7.37.0 and < 7.37.20912≥ 7.36.0 and < 7.36.20807≥ 7.35.0 and < 7.35.20712≥ 7.34.0 and < 7.34.20613 and 3 moreversion 7.33.0≥ 7.32.0 and < 7.32.20410≥ 7.16.0 and < 7.16.18644 |
Vulnerable | CVE Program (cve.org) e CISA ADP |
| CrowdStrike | Laroux Cleanup Tool | ≥ 1.0.20 and < 1.4.70.0 | Vulnerable | CVE Program (cve.org) e CISA ADP |
Attack characteristics
The CVSS vector, decoded. It describes the attack, not your exposure to it.
Every base score collected
Sources score independently and may disagree; each row says who scored it and under which version.
| Score | Version | Severity | Expl. | Impact | Scored by |
|---|---|---|---|---|---|
| 8.8 | CVSS 3.1 | High | 2.0 | 6.0 | 13ddcd98-6f4a-40a8-8e24-29ca0aee4661 via NIST National Vulnerability Database |
| 8.8 | CVSS 3.1 | High | — | — | CrowdStrike via CVE Program (cve.org) e CISA ADP |
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H (score shown at the top: 13ddcd98-6f4a-40a8-8e24-29ca0aee4661) Weakness MITRE
Weakness class according to MITRE’s CWE catalog.
Detection
Read off the CVSS vector and the weakness class. Starting points, not tested rules.
- Local/physical vector: focus on endpoint telemetry (EDR) from affected hosts.
Timeline
What happened to this CVE, newest first.
- 2026
- Affected products added · crowdstrike/falcon sensor for windows, crowdstrike/laroux cleanup tool
- SSVC assessment updated
- Record published
- CVSS changed · 8.8
- Source status changed · → Awaiting Analysis
- Record created in this database
- CVE published
Source activity
Repeated readings are counted rather than listed.
- 1× Official description updated · Oct 15, 2026 – Oct 15, 2026
References
1 on the record
Elsewhere on this site
Related CVEs (same products)
- Medium CVE-2025-42706 CrowdStrike Falcon Sensor for Windows Logic Error Oct 8, 2025
- Medium CVE-2025-42701 CrowdStrike Falcon Sensor for Windows Race Condition Oct 8, 2025
Not in any source we poll
Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.
- No FIRST EPSS score.
- No fixed version, patch or mitigation documented.
- No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
- No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
- No exploit packet captures, log samples, or incident case IDs supplied.
Answered from this record
Text assembled only from the fields above — no additional claims.
What should defenders know first?
CVE-2026-40058 is "Vulnerability Affecting Office Macro Removal in CrowdStrike Falcon Sensor for Windows", rated High. It affects Falcon sensor for Windows (CrowdStrike); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 8.8 describes technical severity. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.
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