High severity8.2NVD Advisory· Published Aug 17, 2026· Updated Aug 26, 2026
CVE-2026-74801
CVE-2026-74801
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
1- Range: <3.7.4
Patches
Vulnerability mechanics
References
2News mentions
1- Siyuan Note: 25 Vulnerabilities Including RCE and Auth Bypass Disclosed TogetherVypr Intelligence · Aug 18, 2026