SEPTEMBER 19, 2026
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Case File

CVE-2026-74801

HIGH · CVSS 8.2 EPSS 0.27% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-17 · Last synced 2026-09-16

CyberRota Analysis

AI-Generated

Microsoft products running SiYuan versions prior to 3.7.4 are vulnerable due to improper escaping of workspace directory paths, allowing attackers to craft malicious directories that can execute arbitrary commands with elevated privileges. This vulnerability poses a significant risk as it can bypass User Account Control (UAC) after approval, potentially leading to unauthorized system access. Organizations using affected versions 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.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-74801
Severity
HIGH
CVSS
8.2
EPSS
0.27%
Microsoft

Original NVD Description

SiYuan before 3.7.4 fails to properly escape workspace directory paths when constructing command-line arguments for the elevated elevator.exe helper process. Attackers can create a malicious workspace directory with command metacharacters in its path and trigger the Microsoft Defender exclusion flow to execute arbitrary commands with administrator privileges after UAC approval.