CVE-2025-9056 is a vulnerability identified in the TECNO AudioLink component, specifically in the package com.transsion.audiosmartconnect version 1.3.0.87. The root cause is an incorrect authorization (CWE-863) in an unprotected service within the AudioLink component, which allows a local attacker to invoke the service without proper permissions. This unauthorized invocation enables the attacker to overwrite system files. The vulnerability does not require any privileges or user interaction, making it accessible to any local user on the device. The CVSS v3.1 base score is 5.3 (medium), with an attack vector of network (AV:N) but no privileges required (PR:N) and no user interaction (UI:N). However, the description indicates local attacker capability, which may suggest a discrepancy in vector labeling; likely the attacker must be local to the device. The impact is limited to confidentiality (low impact) with no integrity or availability impact reported. No known exploits have been observed in the wild, and no patches are currently linked. The vulnerability could allow local attackers to overwrite critical system files, potentially leading to system instability or enabling further local privilege escalation attacks. The flaw arises from missing or improper authorization checks on the service interface, violating secure design principles. Given the affected product is a component in TECNO mobile devices, the threat is primarily relevant to users of these devices. The vulnerability was reserved in August 2025 and published in December 2025, indicating recent discovery.

For European organizations, the impact of CVE-2025-9056 is primarily relevant if TECNO devices running the vulnerable AudioLink component are in use within their environment. The vulnerability allows local attackers to overwrite system files, which could lead to device instability, denial of service, or serve as a stepping stone for privilege escalation. While the direct impact on confidentiality, integrity, and availability is limited, the ability to overwrite system files can compromise device reliability and security posture. Organizations relying on TECNO mobile devices for critical communications or operations may face operational disruptions if exploited. Furthermore, local attackers such as malicious insiders or users with physical access could leverage this vulnerability to escalate privileges or implant persistent malicious code. The lack of known exploits reduces immediate risk, but the vulnerability should be addressed proactively. The medium severity rating reflects moderate risk, but the potential for lateral movement or further exploitation elevates concern in sensitive environments. European organizations with BYOD policies including TECNO devices or those in sectors with high security requirements should prioritize mitigation.

1. Restrict physical and local access to TECNO devices running the vulnerable AudioLink component to trusted personnel only. 2. Monitor devices for unusual local service invocations or file modifications indicative of exploitation attempts. 3. Implement mobile device management (MDM) solutions to enforce security policies and detect anomalous behavior on TECNO devices. 4. Apply vendor patches or updates promptly once available; engage with TECNO support channels to obtain fixes. 5. Disable or restrict the vulnerable AudioLink service if feasible, or employ application whitelisting to prevent unauthorized service invocation. 6. Educate users about the risks of local device compromise and enforce strong authentication mechanisms to reduce unauthorized physical access. 7. Conduct regular security audits on mobile devices to identify unauthorized changes or suspicious activity. 8. For environments with high security needs, consider limiting or segregating TECNO device usage until the vulnerability is remediated.