TI-2026-28874 Aliases CVE-2026-40031 GHSA-wxrw-fvc7-2xmx

MemProcFS < 5.17 DLL/Shared Library Hijacking

LOW 38CWE-427Published 2026-04-08 · Updated 2026-07-14

Key facts

Attack vector: Local
Privileges required: None
User interaction: Passive
Attack complexity: Low
Attack requirements: None
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-427.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00145 3rd percentileScored 2026-11-07

Fix Fixed MemProcFS (ufrisk): 5.17.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
ufrisk	MemProcFS	up to 5.16.12	5.17.0	Patch available	CNA

MemProcFS Vendorufrisk Affected up to 5.16.12 Fixed in 5.17.0 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:ufrisk:memprocfs::::::::	before 5.17	Vulnerable	ufrisk

cpe:2.3:a:ufrisk:memprocfs:*:*:*:*:*:*:*:* Versions before 5.17 Vulnerable ·ufrisk

Remediation

Fix · CNA MemProcFS (ufrisk) Fixed in 5.17.0

Timeline

2026-10-02 Threatist record created from CVE-2026-40031
2026-10-03 Alias added: GHSA-wxrw-fvc7-2xmx

References

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences