This vulnerability allows remote attackers to disclose sensitive information on affected installations of LG LED Assistant. Authentication is not required to exploit this vulnerability. The specific flaw exists within the /api/thumbnail endpoint. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to disclose information in the context of the current user.
https://www.zerodayinitiative.com/advisories/ZDI-23-1223/
https://lgsecurity.lge.com/bulletins/idproducts#updateDetails