VULNERABILITY INTELLIGENCE
CVE-2026-74801
CVSS score8.2 HIGH
EPSS probability0.21%
CISA KEVNot currently listed
Published2026-08-17
Last modified2026-08-26
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
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.
Weakness classification
- disclosure@vulncheck.com: CWE-78