Photoshop Elements versions 2021 build 19.0 (20210304.m.156367) (and earlier) are affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious TTF file.
https://helpx.adobe.com/security/products/photoshop_elements/apsb21-77.html