Description
Hw64.sys in Marvin Test HW.exe before 5.0.5.0 allows unprivileged user-mode processes to arbitrarily map physical memory via IOCTL 0x9c406490 (for IoAllocateMdl, MmBuildMdlForNonPagedPool, and MmMapLockedPages), leading to NT AUTHORITY\SYSTEM privilege escalation.
References (2)
Core 2
Core References
Various Sources
https://www.marvintest.com/KnowledgeBase/KBArticle.aspx?ID=362
Scores
CVSS v3
5.4
EPSS
0.0022
EPSS Percentile
12.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-269
Status
published
Published
May 26, 2024
Tracked Since
Feb 18, 2026