Home

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.

PUBLISHED Reserved 2026-04-08 | Published 2026-04-08 | Updated 2026-04-09 | Assigner VulnCheck




HIGH: 8.5CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

HIGH: 7.8CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Problem types

CWE-427 Uncontrolled Search Path Element

Product status

Default status
unaffected

Any version
affected

5.17 (semver)
unaffected

df80e6e83641f5004025ce661e6dd8139028d7b5 (git)
unaffected

Credits

Mobasi Security Team finder

References

github.com/ufrisk/MemProcFS/releases/tag/v5.17 (Release Notes) product

github.com/...ommit/df80e6e83641f5004025ce661e6dd8139028d7b5 (Patch Commit) patch

mobasi.ai/sentinel (Mobasi Sentinel Vulnerability Index) vendor-advisory

www.vulncheck.com/.../memprocfs-dll-shared-library-hijacking (VulnCheck Advisory: MemProcFS < 5.17 DLL/Shared Library Hijacking) third-party-advisory

cve.org (CVE-2026-40031)

nvd.nist.gov (CVE-2026-40031)

Download JSON