OpenBMCS User Management Privilege Escalation

Advisories

severity: high
date: December 9, 2025
Affecting: OpenBMCS 2.4
CVE: CVE-2021-47701
CWE: CWE-862 Missing Authorization
CVSS: 8.7
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References: ExploitDB-50669
OpenBMCS Product Homepage
Zero Science Lab Disclosure (ZSL-2022-5693)
Credit: LiquidWorm as Gjoko Krstic of Zero Science Lab
Description: 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.