dbcve.org
Windows 10 1507Operating system · Microsoft

CVE-2024-21408

MEDIUM · 5.5 CVSS v3.1 Published 2024-03-12
Fix available
A fix is available. Upgrade to 10.0.10240.20526 / 10.0.14393.6796 or later.
See remediation →
57/100
Remediation priority · Elevated
Zero-click Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Windows Hyper-V Denial of Service Vulnerability

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis
How this class of weakness works · CWE-835

Crafted input drives a loop whose exit condition is never satisfied, hanging the thread and starving the service of the resource it occupies. A single request can be enough to take a worker down. Remediation is bounding iteration counts and validating the conditions that are supposed to terminate the loop.

General guidance for the infinite loop class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Windows 10 1507Operating system
Affected:< 10.0.10240.20526
Windows 10 1607Operating system
Affected:< 10.0.14393.6796
Windows 10 1809Operating system
Affected:< 10.0.17763.5576
Windows 10 21h2Operating system
Affected:< 10.0.19044.4170
Windows 10 22h2Operating system
Affected:< 10.0.19045.4170
Windows 11 21h2Operating system
Affected:< 10.0.22000.2836
Windows 11 22h2Operating system
Affected:< 10.0.22621.3296
Windows 11 23h2Operating system
Affected:< 10.0.22631.3296

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 10.0.10240.20526 / 10.0.14393.6796 / 10.0.17763.5576 or later
Fixed in 10.0.10240.2052610.0.14393.679610.0.17763.5576
Vendor patch msrc.microsoft.com →
Recommended fix High confidence

Windows 10 1507: 10.0.10240.20526 | Windows 10 1607: 10.0.14393.6796 | Windows 10 1809: 10.0.17763.5576 | Windows 10 21h2: 10.0.19044.4170 | Windows 10 22h2: 10.0.19045.4170 | Windows 11 21h2: 10.0.22000.2836 | Windows 11 22h2: 10.0.22621.3296 | Windows 11 23h2: 10.0.22631.3296

  1. Check current Windows version by running 'winver' or 'systeminfo' to confirm the version and build number
  2. Open Windows Update by going to Settings > Update & Security > Windows Update
  3. Click 'Check for updates' and install all available security updates
  4. If the specific update is not offered, manually download it from the Microsoft Update Catalog (https://catalog.update.microsoft.com/) by searching for CVE-2024-21408
  5. After installation, restart the system as prompted
  6. Verify the installation was successful by checking Windows Update history for the CVE-2024-21408 update
Caveat Standard Microsoft security patch with no expected breaking changes; applies to Hyper-V host systems

Generated from the published advisory — verify against the referenced sources before acting.

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $1,600. Get the upgrade done

Scan for this in your stack

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-21408 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data