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CVE-2026-40031— MemProcFS < 5.17 DLL/Shared Library Hijacking

Quick assessment

Affected
ufrisk MemProcFS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

MemProcFS是Ulf Frisk个人开发者的一个物理内存虚拟文件系统分析工具。 MemProcFS 5.17之前版本存在代码问题漏洞，该漏洞源于存在多个不安全的库加载模式，可能导致DLL和共享库劫持，从而执行任意代码。

CVSS 7.8 · High EPSS 0.21% · P10

Affected Version Matrix 3

VendorProduct Version RangeStatus
ufrisk MemProcFS ≤ 5.16.12 affected
5.17.0 unaffected
df80e6e83641f5004025ce661e6dd8139028d7b5 unaffected
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I. Basic Information for CVE-2026-40031

Vulnerability Information
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Vulnerability Title
MemProcFS < 5.17 DLL/Shared Library Hijacking
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对搜索路径元素未加控制
Source: CVE Program / CVE List V5
Vulnerability Title
MemProcFS 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MemProcFS是Ulf Frisk个人开发者的一个物理内存虚拟文件系统分析工具。 MemProcFS 5.17之前版本存在代码问题漏洞，该漏洞源于存在多个不安全的库加载模式，可能导致DLL和共享库劫持，从而执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ufrisk MemProcFS 0 ~ 5.16.12 -

II. Public POCs for CVE-2026-40031

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III. Intelligence Information for CVE-2026-40031

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Patches & Fixes for CVE-2026-40031 (1)

Vendor Pages for CVE-2026-40031 (1)

IV. Related Vulnerabilities

Same weakness: CWE-427

V. Comments for CVE-2026-40031

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