CVE-2021-47701: Openbmcs

High severity, CVSS 8.8. EPSS: 0.5% chance of exploitation in the next 30 days.

OpenBMCS 2.4 allows an attacker to escalate privileges from a read user to an admin user by manipulating permissions and exploiting a vulnerability in the update_user_permissions.php script. Attackers can submit a malicious HTTP POST request to PHP scripts in '/plugins/useradmin/' directory.

Affected products

• Openbmcs Openbmcs: version 2.4 only

Published 2025-12-09. Last modified 2026-06-17.