Vulnerability in Ufrisk Memprocfs
CVE-2026-40031
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.
EPSS: 0.001 (4.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Ufrisk Memprocfs — versions df80e6e83641f5004025ce661e6dd8139028d7b5, 5.17.0, 5.17
Weakness classification (CWE)
References
- disclosure@vulncheck.com (Product, product)
- disclosure@vulncheck.com (Patch, patch)
- disclosure@vulncheck.com (vendor-advisory, Third Party Advisory)
- disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-40031?
- CVE-2026-40031 is a high-severity vulnerability in Ufrisk Memprocfs, classified under Uncontrolled Search Path Element. CVSS score: 7.8/10. Published 2026-04-08.
- How severe is CVE-2026-40031?
- High severity. CVSS v3 base score is 7.8 out of 10.