CVE-2021-47701 OpenBMCS User Management Privilege Escalation
Attackers can escalate privileges from read user to admin by manipulating permissions via malicious HTTP POST requests in OpenBMCS.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-47701?
CVE-2021-47701 is a high-severity vulnerability in OpenBMCS, published on 9 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-862
Which versions are affected by CVE-2021-47701?
It affects 1 product.
Products include Openbmcs Openbmcs.
How do I fix CVE-2021-47701?
No fix has been published for CVE-2021-47701 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-47701 being exploited?
There is no known exploitation of CVE-2021-47701 in the wild and no public exploit code.
Other vulnerabilities in OpenBMCS
Sources
Also known as GHSA-3rfh-phff-7g8v.