CVE-2021-21083: Adobe Experience Manager

High severity, CVSS 7.5. EPSS: 2% chance of exploitation in the next 30 days.

AEM's Cloud Service offering, as well as versions 6.5.7.0 (and below), 6.4.8.3 (and below) and 6.3.3.8 (and below) are affected by an Improper Access Control vulnerability. An unauthenticated attacker could leverage this vulnerability to cause an application denial-of-service in the context of the current user.

Affected products

• Adobe Experience Manager: up to and including 6.3.3.8; from 6.4.0.0, before 6.4.8.4 (fixed in 6.4.8.4); from 6.5.0.0, before 6.5.8.0 (fixed in 6.5.8.0)
• Adobe Experience Manager Cloud Service: affected versions not specified

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