OPEN BMCS OpenBMCS 2.4 HTTP POST Request update_user_permissions.php authorization

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability was found in OPEN BMCS OpenBMCS 2.4. It has been rated as critical. This vulnerability affects unknown code of the file update_user_permissions.php of the component HTTP POST Request Handler. This manipulation causes authorization. This vulnerability appears as CVE-2021-47701. The attack may be initiated remotely. In addition, an exploit is available.

Detailsinfo

A vulnerability classified as critical was found in OPEN BMCS OpenBMCS 2.4. Affected by this vulnerability is an unknown function of the file update_user_permissions.php of the component HTTP POST Request Handler. The manipulation with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was presented by Gjoko Krstic as 50669. It is possible to read the advisory at exploit-db.com. This vulnerability is known as CVE-2021-47701 since 12/05/2025. The exploitation appears to be easy. The attack can be launched remotely. Technical details and also a public exploit are known.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. By approaching the search of inurl:update_user_permissions.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Exploit-DB (50669). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.2

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Authorization
CWE: CWE-862 / CWE-863 / CWE-285
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Google Hack: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Exploit-DB: 🔒

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

12/05/2025 CVE reserved
12/10/2025 +5 days Advisory disclosed
12/10/2025 +0 days VulDB entry created
12/17/2025 +7 days VulDB entry last update

Sourcesinfo

Advisory: 50669
Researcher: Gjoko Krstic
Status: Not defined

CVE: CVE-2021-47701 (🔒)
GCVE (CVE): GCVE-0-2021-47701
GCVE (VulDB): GCVE-100-335503
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 12/10/2025 07:33
Updated: 12/17/2025 17:11
Changes: 12/10/2025 07:33 (71), 12/17/2025 17:11 (11)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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