CVE-2026-40031

high

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.

References

Advisories
More

https://www.vulncheck.com/advisories/memprocfs-dll-shared-library-hijacking

https://mobasi.ai/sentinel

https://github.com/ufrisk/MemProcFS/releases/tag/v5.17

https://github.com/ufrisk/MemProcFS/commit/df80e6e83641f5004025ce661e6dd8139028d7b5

Details

Source: Mitre, NVD

Published: 2026-04-08

Updated: 2026-04-17

Risk Information

CVSS v2

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 7.8

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Severity: High

CVSS v4

Base Score: 8.5

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

Severity: High

EPSS

EPSS: 0.00013