CVE-2021-21100: Adobe Digital Editions

High severity, CVSS 7.8. EPSS: 1.7% chance of exploitation in the next 30 days.

Adobe Digital Editions version 4.5.11.187245 (and earlier) is affected by a Privilege Escalation vulnerability during installation. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary file system write 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 Digital Editions: up to and including 4.5.11.187245

Published 2021-04-15. Last modified 2026-06-17.