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CVE-2026-40031 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/ufrisk/MemProcFS/commit/df80e6e83641f5004025ce661e6dd8139028d7b5	[email protected]	Patch
https://github.com/ufrisk/MemProcFS/releases/tag/v5.17	[email protected]	Product
https://mobasi.ai/sentinel	[email protected]	Third Party Advisory
https://www.vulncheck.com/advisories/memprocfs-dll-shared-library-hijacking	[email protected]	Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-427	Uncontrolled Search Path Element	[email protected]

Affected Products

Product	Versions
ufrisk memprocfs	< 5.17
CPE cpe:2.3:a:ufrisk:memprocfs:::::::: Remediation No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Jul 24, 2026	CVE Translated	[email protected]
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Apr 17, 2026	Initial Analysis	[email protected]
Apr 8, 2026	New CVE Received	[email protected]