CVE-2025-40837 in Indoor Connect 8855
Summary
by MITRE • 09/25/2025
Ericsson Indoor Connect 8855 contains a missing authorization vulnerability which if exploited can allow access to the system as a user with higher privileges than intended.
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Analysis
by VulDB Data Team • 09/25/2025
The CVE-2025-40837 vulnerability resides within Ericsson Indoor Connect 8855, a network infrastructure device designed for indoor wireless connectivity solutions. This device operates within enterprise and industrial environments where secure network access is critical for operational continuity. The vulnerability represents a significant security weakness that undermines the authentication mechanisms protecting the system's administrative interfaces and core functionalities.
This missing authorization flaw stems from insufficient access control validation within the device's authentication framework. When exploited, the vulnerability allows an attacker to bypass normal authorization checks and escalate their privileges to those of a higher-privileged user. The technical implementation appears to lack proper role-based access controls or insufficient validation of user permissions during session establishment and privilege escalation processes. This weakness creates an avenue for unauthorized users to gain elevated system access without proper authentication credentials.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it enables attackers to potentially compromise the entire network infrastructure managed by the Indoor Connect 8855 device. An attacker with elevated privileges could modify network configurations, access sensitive operational data, disrupt services, or establish persistent access points within the network. The vulnerability affects the device's integrity and availability, as it allows unauthorized modifications to system parameters that control wireless network behavior and security policies.
From a cybersecurity perspective, this vulnerability aligns with CWE-284, which addresses improper access control issues in software systems. The flaw demonstrates inadequate privilege management and authorization validation mechanisms that should be implemented according to security best practices outlined in frameworks such as NIST SP 800-53. The vulnerability also maps to ATT&CK technique T1078 which covers valid accounts and legitimate credentials for maintaining access to systems. Organizations utilizing Ericsson Indoor Connect 8855 devices face heightened risk of lateral movement and persistent threats when this vulnerability remains unpatched.
Mitigation strategies should include immediate implementation of firmware updates provided by Ericsson to address the authorization flaw. Network administrators should conduct comprehensive security assessments to identify any potential exploitation attempts and implement additional monitoring controls around authentication and privilege escalation events. The device configuration should be reviewed to ensure that only necessary administrative accounts exist and that proper access controls are enforced. Organizations should also consider implementing network segmentation and additional authentication layers to reduce the attack surface and limit the potential impact of privilege escalation attacks. Regular security audits and vulnerability assessments should be conducted to identify similar authorization weaknesses in other network infrastructure components.