Incorrect permission assignment for critical resource in Cryptomator - #VU159305
Published: November 4, 2026
Vulnerability identifier: #VU159305
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-732
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to execute arbitrary Java code with another local user's permissions.
The vulnerability exists due to incorrect permission assignment in the Windows installer when preserving a pre-existing machine-wide admin configuration file without resetting its ownership or access permissions. A local user can plant C:ProgramDataCryptomatorconfig.properties before initial installation or an upgrade introducing admin configuration support, then use the cryptomator.pluginDir setting to load attacker-controlled plugin code when another user starts Cryptomator.
Affected software
Cryptomator
Remediation
Install security update from vendor's website.
Cryptomator - update to 1.19.5