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CVE-2024-38217: Microsoft Windows Mark of the Web (MOTW) Protection Mechanism Failure Vulnerability

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Patch now
MEDIUM 5.4EXPLOITEDWATCHLISTUPGRADEUPGRADEUPGRADE

CVE-2024-38217 is a medium-severity flaw (CVSS 5.4) affecting windows 10 1507, windows 10 1607, windows 10 1809, reported as exploited in the wild. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Windows Mark of the Web Security Feature Bypass Vulnerability

Why this priority

  • EPSS top 4%: very likely to be exploited
  • Exploited in the wild (CISA KEV)
  • Public exploit reference
  • On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score5.4 (Medium)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionRequired
EPSS exploit chance10.0% (top 4%)
CISA exploited listYes, fix due 2024-10-01
WeaknessCWE-693
Published2024-09-10
Last modified2026-08-10
Publisher (CNA): Microsoft Corporation · Vendor: microsoft

Share: LinkedIn · X · Reddit

Last updated 2026-08-10 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

microsoft windows 10 1507 UPGRADE
Affected: < 10.0.10240.20766
Fixed in: 10.0.10240.20766
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
microsoft windows 10 1607 UPGRADE
Affected: < 10.0.14393.7336
Fixed in: 10.0.14393.7336
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
microsoft windows 10 1809 UPGRADE
Affected: < 10.0.17763.6293
Fixed in: 10.0.17763.6293
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
microsoft windows 10 21h2 UPGRADE
Affected: < 10.0.19044.4894
Fixed in: 10.0.19044.4894
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
microsoft windows 10 22h2 UPGRADE
Affected: < 10.0.19045.4894
Fixed in: 10.0.19045.4894
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
microsoft windows 11 21h2 UPGRADE
Affected: < 10.0.22000.3197
Fixed in: 10.0.22000.3197
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Exact fixes by distribution

Fedora ELN · gram_grep · FIXED · 0.10.4-1.eln159 · FEDORA-2026-0808475f2a · source
sudo dnf upgrade --advisory=FEDORA-2026-0808475f2a
Fedora 46 · wesnoth · FIXED · 1.19.29-1.fc46 · FEDORA-2026-58f458e24e · source
sudo dnf upgrade --advisory=FEDORA-2026-58f458e24e

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Verify at the official source NVD · CVE Program · CISA KEV catalog · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-38217?

windows 10 1507: upgrade to 10.0.10240.20766; windows 10 1607: upgrade to 10.0.14393.7336; windows 10 1809: upgrade to 10.0.17763.6293. Exact commands for each OS are on this page.

Is CVE-2024-38217 being exploited?

Yes. CVE-2024-38217 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

What does CVE-2024-38217 affect?

CVE-2024-38217 affects windows 10 1507, windows 10 1607, windows 10 1809. Severity is medium (CVSS 5.4). Windows Mark of the Web Security Feature Bypass Vulnerability

How urgent is CVE-2024-38217?

Priority 78/100. EPSS top 4%: very likely to be exploited; Exploited in the wild (CISA KEV); Public exploit reference; On your watchlist

Software pages

Windows vulnerabilities

Related CVEs

References

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