Patch tracker / CVE reference / CVE-2024-38217
CVE-2024-38217
CVE-2024-38217 is a medium severity Microsoft vulnerability with a CVSS score of 5.4. It is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it in the wild, which makes it a fix-first item. Microsoft has shipped the fix: deploy one of the 16 updates below from the Microsoft Update Catalog, and see where this CVE sits against the rest on the patch tracker.
Risk summary
Listed in the CISA Known Exploited Vulnerabilities catalog, confirmed exploited in the wild. EPSS exploit probability 52%. CVSS 5.4 (Medium).
This CVE is among the top half of tracked Microsoft CVEs by EPSS exploit probability, and one of 4 actively-exploited CVEs in September 2024.
The more severe of the exploited Mark of the Web bypasses, rated Critical Severity at CVSS 9.8 with a 71% EPSS and a CISA KEV entry from September 2024. Attackers abuse it to deliver files to Windows 10 1809 and Windows Server 2019 machines without the downloaded-file warnings and policy checks that normally apply. Because the entire smart-app-control and screening chain keys off that web mark, this single bypass undermines several defensive layers at once.
Do this: Confirm the September 2024 update is deployed to every 1809 and Server 2019 endpoint, then rely on application control policies rather than download prompts for interim protection.
AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for CVE-2024-38217
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Official patch(es) for CVE-2024-38217
Treat as urgent: it is being exploited in the wild (CISA KEV), so patch ahead of items that are not. In Intune or Defender, confirm whether the fixing updates KB5042880, KB5042881, KB5043050, KB5043051, KB5043055, KB5043064, KB5043067, KB5043076, KB5043080, KB5043083, KB5043087, KB5043092, KB5043125, KB5043129, KB5043135, KB5043138 are installed across the affected products. Senserva does this automatically across your tenant and flags every missing patch.
Apply the Microsoft security updates below to fix CVE-2024-38217. Each KB page carries the Microsoft Update Catalog download, Microsoft's known issues for the update, a copy-paste PowerShell check for whether it is installed, and the Senserva AI read.
Scope and sources
- Affected products
- Fixed by the same updates
- Authoritative references
Want every Microsoft CVE and the patches that fix it, ranked by real-world risk? See the Microsoft Patch Tracker.