Adobe Illustrator version 25.2.3 (and earlier) is affected by an Use-after-free vulnerability when parsing a specially crafted file. An unauthenticated attacker could leverage this vulnerability to read arbitrary file system information in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
https://www.zerodayinitiative.com/advisories/ZDI-21-1146/
https://helpx.adobe.com/security/products/illustrator/apsb21-42.html