CVE-2026-74801
HIGH
NVD
CVSS Score
8.2
Severity
HIGH
Published
Aug 17, 2026
Vendor
unknown
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.