CVE-2021-47701
OpenBMCS User Management Privilege Escalation
- State
- Published
- Severity
- 8.7 High
- Published
- Dec 9, 2025
- Updated
- Apr 7, 2026
- Reserved
- Dec 5, 2025
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | 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 | VulnCheck |
Weaknesses
- CWE-862 Missing Authorization
Affected Products
| Product | Versions |
|---|---|
OpenBMCSOPEN BMCS |
|
References
- ExploitDB-50669exploit
- Zero Science Lab Disclosure (ZSL-2022-5693)third-party-advisory
- VulnCheck Advisory: OpenBMCS User Management Privilege Escalationthird-party-advisory
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