CVE-2024-43633

Hypervisor service interruption by local low-privileged users

Published Nov 12, 2024 · Updated Jul 8, 2025

Denial of service in Microsoft Windows Hyper-V allows local users with low privileges to interrupt an affected Windows 11 host. Microsoft identifies improperly locked sensitive-data storage but has not published the affected Hyper-V locus or triggering operation. Exploitation crosses a security boundary and affects availability; the exact failure mode and duration remain undisclosed.

CVSS severity6.5
Medium
EPSS probability0.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Microsoft Windows Hyper-V allows local users with low privileges to interrupt an affected Windows 11 host. Microsoft identifies improperly locked sensitive-data storage but has not published the affected Hyper-V locus or triggering operation. Exploitation crosses a security boundary and affects availability; the exact failure mode and duration remain undisclosed.

The record

CVE
CVE-2024-43633
Published
Nov 12, 2024
Updated
Jul 8, 2025
Vendor
Microsoft
Product
Windows 11, version 24H2
Classifications
CWE-591, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 12, 2024CVE publishedPublication date reported by the CVE source.
  2. Jul 8, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.0.26100.0 <10.0.26100.2314

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Microsoft · Windows 11, version 24H2version=10.0.26100.0 <10.0.26100.2314
Microsoft · Windows 11 Version 22H3version=10.0.22631.0 <10.0.22631.4460
Microsoft · Windows 11 Version 23H2version=10.0.22631.0 <10.0.22631.4460
Microsoft · Windows 11, version 22H2version=10.0.22621.0 <10.0.22621.4460

Published CVSS scores

6.5MicrosoftCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-591Sensitive Data Storage in Improperly Locked Memory
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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