CVE-2025-7355: Beefull App Auth Bypass Vulnerability

CVE-2025-7355 Overview

CVE-2025-7355 is an authorization bypass vulnerability in the Beefull App developed by Beefull Energy Technologies. The flaw is classified under [CWE-639] Authorization Bypass Through User-Controlled Key, an Insecure Direct Object Reference (IDOR) pattern. An authenticated attacker can manipulate trusted identifiers in requests to access data belonging to other users. The vulnerability affects all Beefull App versions released before 24.07.2025. The issue was reported through Turkey's national cybersecurity coordination bodies (USOM and Siber Güvenlik).

Critical Impact
An authenticated remote attacker can access confidential data belonging to other Beefull App users by substituting identifiers in API requests, leading to unauthorized disclosure of user information.

Affected Products

Beefull Energy Technologies Beefull App (all versions prior to 24.07.2025)

Discovery Timeline

2025-09-16 - CVE-2025-7355 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-7355

Vulnerability Analysis

CVE-2025-7355 is an Insecure Direct Object Reference (IDOR) weakness classified as [CWE-639]. The Beefull App relies on client-supplied identifiers to determine which resource a request should return. The application authenticates the caller but does not verify that the caller owns or is otherwise entitled to the referenced object. An attacker with a legitimate low-privileged account can enumerate or guess identifiers and retrieve records that belong to other tenants. The impact is limited to confidentiality; integrity and availability are not affected by this specific flaw.

Root Cause

The root cause is missing server-side authorization enforcement on object-level access. The application trusts identifiers such as user IDs, device IDs, or record IDs that are supplied in request parameters, headers, or path segments. Object ownership is not cross-checked against the authenticated session, resulting in horizontal privilege escalation.

Attack Vector

The vulnerability is exploitable over the network with low complexity and requires only low-privileged authentication. No user interaction is needed. An attacker authenticates to the mobile backend, intercepts an API request using a proxy, and modifies an identifier field to reference another user's resource. The server returns the requested object without validating ownership. Additional technical detail is available in the USOM Notification TR-25-0255 and the Siber Güvenlik Notification TR-25-0255.

Detection Methods for CVE-2025-7355

Indicators of Compromise

Sequential or non-sequential enumeration patterns in API request logs targeting user-identifier parameters.
Repeated HTTP 200 responses to a single authenticated session accessing many distinct user or resource IDs.
Sudden increases in outbound data volume tied to a single low-privileged mobile app account.

Detection Strategies

Instrument backend APIs to log the authenticated principal alongside every accessed object ID and alert when they do not match.
Deploy anomaly detection on API gateways to flag accounts accessing an unusually broad range of object identifiers.
Correlate mobile app authentication events with resource access events to identify horizontal enumeration.

Monitoring Recommendations

Forward Beefull App backend logs and API gateway telemetry to a centralized analytics platform for behavioral baselining.
Monitor for high-frequency requests iterating over identifier ranges from single accounts or IP addresses.
Track error-to-success ratios on identifier-parameterized endpoints; a low ratio combined with high volume suggests successful enumeration.

How to Mitigate CVE-2025-7355

Immediate Actions Required

Upgrade the Beefull App and its backend to the release dated 24.07.2025 or later.
Force reauthentication and rotate session tokens for accounts that showed identifier-enumeration behavior.
Review backend access logs for the last 90 days to identify potential unauthorized data access.

Patch Information

Beefull Energy Technologies addressed the issue in Beefull App releases dated on or after 24.07.2025. Users should update the mobile application through the appropriate app store, and operators should confirm the backend has been updated. Reference the USOM Notification TR-25-0255 for vendor-coordinated remediation guidance.

Workarounds

Enforce server-side object-level authorization checks that bind every resource identifier to the authenticated user before returning data.
Replace predictable numeric identifiers with unguessable values such as UUIDv4 to slow enumeration attempts.
Apply per-account rate limits on endpoints that accept identifier parameters to constrain large-scale abuse.
Where feasible, restrict backend API access to trusted networks or require mutual TLS from the mobile client.

bash

# Configuration example
# No vendor-provided configuration snippet is available.
# Refer to the USOM advisory TR-25-0255 for remediation guidance.