CVE-2026-40058

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-09-15. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
8.8
EG Score
8.8(high)
EG Risk
40(Track)
EG Risk 40/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity88% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
0%
KEV
Not listed

Published

September 15, 2026

Last Modified

September 18, 2026

Advisory Details (1)

Auto-updated Sep 15, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic🔴 Active Exploitation

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

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

Vendor Advisories for CVE-2026-40058(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 18× in last 7d / 18× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-19 19:13 UTCGHSA enrichment
  2. 2026-09-19 07:26 UTCGHSA enrichment
  3. 2026-09-18 19:48 UTCGHSA enrichment
  4. 2026-09-18 18:36 UTCGHSA enrichment
  5. 2026-09-18 06:58 UTCEG score recompute
  6. 2026-09-18 06:58 UTCGHSA enrichment
  7. 2026-09-17 19:30 UTCEPSS rescore
  8. 2026-09-17 19:19 UTCGHSA enrichment
  9. 2026-09-17 06:37 UTCGHSA enrichment
  10. 2026-09-16 18:56 UTCEG score recompute
  11. 2026-09-16 18:56 UTCGHSA enrichment
  12. 2026-09-16 14:08 UTCEPSS rescore
  13. 2026-09-16 07:16 UTCGHSA enrichment
  14. 2026-09-15 19:37 UTCEG score recompute
  15. 2026-09-15 19:37 UTCGHSA enrichment
  16. 2026-09-15 18:24 UTCEG score recompute
  17. 2026-09-15 17:58 UTCEG score recompute
  18. 2026-09-15 17:57 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-40058?
CVE-2026-40058 is a high vulnerability published on September 15, 2026. 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…
When was CVE-2026-40058 disclosed?
CVE-2026-40058 was first published in the National Vulnerability Database on September 15, 2026, with the most recent update on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-40058 actively exploited?
CVE-2026-40058 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 99.7% of all scored CVEs.
What is the CVSS score of CVE-2026-40058?
CVE-2026-40058 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-40058?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40058, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-40058

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