CVE-2026-34627: Adobe Indesign

High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days.

InDesign Desktop versions 20.5.2, 21.2 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.

Affected products

• Adobe Indesign: before 20.5.3 (fixed in 20.5.3); from 21.0, before 21.3 (fixed in 21.3)

Published 2026-04-14. Last modified 2026-08-28.