CVE-2021-21099: Adobe Indesign

High severity, CVSS 8.8. EPSS: 5.8% chance of exploitation in the next 30 days.

Adobe InDesign version 16.0 (and earlier) is affected by an Out-of-bounds Write vulnerability when parsing a crafted file. An unauthenticated attacker could leverage this vulnerability to achieve remote 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: up to and including 16.0

Published 2021-06-28. Last modified 2026-06-17.