CVE-2025-54596
BaseFortify
Publication date: 2025-07-25
Last updated on: 2025-07-29
Assigner: MITRE
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| abnormal_security | api | * |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-863 | The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
CVE-2025-54596 is a vulnerability in the Abnormal Security API endpoint `/v1.0/rbac/users_v2/{USER_ID}/` where authenticated users can downgrade the privileges of other user accounts. The API fails to properly verify if the requesting user has sufficient privileges to change the role of the target user. This allows a user with a lower administrative role to reduce the privileges of a user with a higher administrative role by sending a specially crafted request. However, privilege escalation (increasing privileges) is not possible through this vulnerability. [1]
How can this vulnerability impact me? :
This vulnerability can impact you by allowing users with lower administrative privileges to reduce the roles and permissions of higher privileged users. This could disrupt normal administrative operations, weaken security controls, and potentially lead to unauthorized changes in user management. Although it does not allow privilege escalation, it can cause operational and security issues by improperly downgrading user roles. [1]
How can this vulnerability be detected on my network or system? Can you suggest some commands?
This vulnerability can be detected by monitoring API requests to the endpoint `/v1.0/rbac/users_v2/{USER_ID}/` for unauthorized role modification attempts. Specifically, look for PUT requests where a user with lower privileges attempts to downgrade the roles of higher privileged users. Commands to detect such activity could include inspecting API logs or using network monitoring tools to filter PUT requests to this endpoint. For example, using curl to simulate or check requests: `curl -X PUT https://<api-url>/v1.0/rbac/users_v2/<USER_ID>/ -d '{"role": "lower_role"}' -H 'Authorization: Bearer <token>'` to test if role downgrading is possible. Additionally, reviewing logs for such PUT requests and verifying the roles involved can help detect exploitation attempts. [1]
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include restricting access to the `/v1.0/rbac/users_v2/{USER_ID}/` API endpoint to only trusted and highly privileged users, implementing strict RBAC validation on the server side to ensure users cannot downgrade roles of higher privileged accounts, and applying any available patches or updates provided by Abnormal Security that address this vulnerability. Additionally, monitoring and alerting on suspicious PUT requests to this endpoint can help detect and prevent exploitation. [1]