CVE-2025-52666: Revive-Adserver Revive Adserver

Low severity, CVSS 2.7. EPSS: 0.4% chance of exploitation in the next 30 days.

Improper neutralisation of format characters in the settings of Revive Adserver 5.5.2 and 6.0.1 and earlier versions causes an administrator user to disable the admin user console due to a fatal PHP error.

Affected products

• Revive-Adserver Revive Adserver: up to and including 5.5.2; from 6.0.0, up to and including 6.0.1

Published 2025-11-20. Last modified 2026-09-26.