CVE-2026-40031 PUBLISHED

MemProcFS < 5.17 DLL/Shared Library Hijacking

Assigner: VulnCheck
Reserved: 08.04.2026 Published: 08.04.2026 Updated: 08.04.2026

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 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
CVSS Score: 8.5

Product Status

Vendor ufrisk
Product MemProcFS
Versions Default: unaffected
  • affected from 0 to 5.16.12 (incl.)
  • Version 5.17 is unaffected
  • Version df80e6e83641f5004025ce661e6dd8139028d7b5 is unaffected

Credits

  • Mobasi Security Team finder

References

Problem Types

  • CWE-427 Uncontrolled Search Path Element CWE