CyberRota Analysis
AI-GeneratedThe SiYuan Windows installer prior to version 3.8.1 is vulnerable due to an uncontrolled search path element in its NSIS installer, allowing attackers to execute malicious executables placed in the installer’s launch directory. This vulnerability can lead to local privilege escalation, as the malicious binary can run with elevated privileges during the installation process. Organizations using affected versions of the SiYuan installer should prioritize patching to mitigate the risk of exploitation.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
SiYuan Windows installer before version 3.8.1 (affected versions >= 2.0.14) contains an uncontrolled search path element vulnerability in its NSIS installer, which invokes system executables such as TASKKILL by name rather than by absolute path. Because NSIS nsExec::Exec resolves these calls using a search path that includes the installer's own launch directory ahead of System32, an attacker who plants a malicious executable (e.g., a renamed TASKKILL.exe) in that directory can have it executed when the installer runs. These calls occur in electron-builder's preInit hook before the license page is displayed, and with an all-users (elevated) install the planted binary executes with an elevated token, resulting in local privilege escalation.