CVE-2024-36055

System crash via arbitrary physical-memory mapping

Published May 26, 2024 · Updated Feb 13, 2025

Incorrect authorization in Hw64.sys in Marvin Test HW.exe before 5.0.5.0 allows local users to trigger a Windows system crash. Multiple IOCTL handlers pass caller-selected physical addresses to MmMapIoSpace and expose read/write mappings to unprivileged user-mode processes. Local low-privilege access is required, and exploitation can force a blue-screen crash that interrupts the affected Windows host.

CVSS severity5.5
Medium
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Hw64.sys in Marvin Test HW.exe before 5.0.5.0 allows local users to trigger a Windows system crash. Multiple IOCTL handlers pass caller-selected physical addresses to MmMapIoSpace and expose read/write mappings to unprivileged user-mode processes. Local low-privilege access is required, and exploitation can force a blue-screen crash that interrupts the affected Windows host.

The record

CVE
CVE-2024-36055
Published
May 26, 2024
Updated
Feb 13, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-863, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 26, 2024CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/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.

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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-863Incorrect Authorization
T1499.004Application 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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