CVE-2018-12596: Episerver Ektron CMS

Critical severity, CVSS 9.8. EPSS: 22.4% chance of exploitation in the next 30 days.

Episerver Ektron CMS before 9.0 SP3 Site CU 31, 9.1 before SP3 Site CU 45, or 9.2 before SP2 Site CU 22 allows remote attackers to call aspx pages via the "activateuser.aspx" page, even if a page is located under the /WorkArea/ path, which is forbidden (normally available exclusively for local admins).

Affected products

• Episerver Ektron CMS: version 9.00 only; version 9.10 only; version 9.20 only

Published 2018-10-10. Last modified 2026-06-17.