CVE-2026-21304

InDesign Desktop versions 21.0, 19.5.5 and earlier are affected by a Heap-based Buffer Overflow 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 file.

• https://helpx.adobe.com/security/products/indesign/apsb26-02.html
  Vendor Advisory