CVE-2026-40031 HIGH

CVE-2026-40031: MemProcFS < 5.17 DLL/Shared Library Hijacking

Vendor Ufrisk
Product MemProcFS
Weakness CWE-427
Published April 8, 2026
Last update May 8, 2026

CVSS base score

8.5/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction
Confidentiality
Integrity

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 8, 2026 CVE published
May 8, 2026 Record updated