CVE-2025-4855: Schiocco Support Board

Critical severity, CVSS 9.8. EPSS: 0.4% chance of exploitation in the next 30 days.

The Support Board plugin for WordPress is vulnerable to unauthorized access/modification/deletion of data due to use of hardcoded default secrets in the sb_encryption() function in all versions up to, and including, 3.8.0. This makes it possible for unauthenticated attackers to bypass authorization and execute arbitrary AJAX actions defined in the sb_ajax_execute() function. An attacker can use this vulnerability to exploit CVE-2025-4828 and various other functions unauthenticated.

Affected products

• Schiocco Support Board: before 3.8.1 (fixed in 3.8.1)

Published 2025-07-09. Last modified 2026-06-17.