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Vulnerabilities CVE-2026-40031

CVE-2026-40031

High
Open
TLP:CLEAR

MemProcFS < 5.17 DLL/Shared Library Hijacking

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Description

MemProcFS before 5.17 contains multiple unsafe library-loading patterns that enable DLL and shared-library hijacking across six attack surfaces, including bare-name LoadLibraryU and dlopen calls without path qualification for vmmpyc, libMSCompression, and plugin DLLs. An attacker who places a malicious DLL or shared library in the working directory or manipulates LD_LIBRARY_PATH can achieve arbitrary code execution when MemProcFS loads.

Details

CVSS Score
8.5
EPSS Score
0.14%

4th percentile

CVSS Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Confidence
90%
Published
Apr 8, 2026
Last Modified
Jul 14, 2026
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