Is CVE-2026-74801 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-74801?

CVE-2026-74801 has a CVSS v3 severity of HIGH (8.2).

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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.