Adobe Dimension versions 3.4.3 (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 GIF file.
https://www.zerodayinitiative.com/advisories/ZDI-21-1571/
https://helpx.adobe.com/security/products/dimension/apsb21-116.html