CVE-2024-38080Known exploitation

SYSTEM privilege escalation via integer overflow

Published Jul 9, 2024 · Updated Feb 10, 2026

Integer overflow in Windows Hyper-V on affected Windows 11 and Windows Server 2022 builds allows local users to gain SYSTEM privileges. Microsoft has not disclosed the affected Hyper-V code path or the arithmetic operation whose integer overflow corrupts security-relevant state. Exploitation requires existing local user access; successful exploitation yields complete control of the Windows host as SYSTEM.

CVSS severity7.8
High
EPSS probability7.12%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Integer overflow in Windows Hyper-V on affected Windows 11 and Windows Server 2022 builds allows local users to gain SYSTEM privileges. Microsoft has not disclosed the affected Hyper-V code path or the arithmetic operation whose integer overflow corrupts security-relevant state. Exploitation requires existing local user access; successful exploitation yields complete control of the Windows host as SYSTEM.

The record

CVE
CVE-2024-38080
Published
Jul 9, 2024
Updated
Feb 10, 2026
Vendor
Microsoft
Product
Windows 11 version 21H2
Classifications
CWE-190, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 9, 2024Exploitation reportedCISA Known Exploited Vulnerabilities Catalog listing
  2. Jul 9, 2024CVE publishedPublication date reported by the CVE source.
  3. Feb 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=10.0.0 <10.0.22000.3079

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Microsoft · Windows 11 version 21H2version=10.0.0 <10.0.22000.3079
Microsoft · Windows Server 2022, 23H2 Edition (Server Core installation)version=10.0.25398.0 <10.0.25398.1009
Microsoft · Windows 11 Version 22H3version=10.0.22631.0 <10.0.22631.3880
Microsoft · Windows 11 Version 23H2version=10.0.22631.0 <10.0.22631.3880
Microsoft · Windows 11, version 22H2version=10.0.22621.0 <10.0.22621.3880
Microsoft · Windows Server 2022version=10.0.20348.0 <10.0.20348.2582

Published CVSS scores

7.8Microsoft CorporationCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound
T1068Exploitation for Privilege Escalation

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.

Reported exploitation

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo