CVE-2025-61614 identifies a critical vulnerability in the NR (New Radio) modem component of Unisoc (Shanghai) Technologies Co., Ltd. chipsets T7300, T8100, T9100, T8200, and T8300, which are integrated into Android devices running versions 13 through 16. The root cause is improper input validation (CWE-20) within the modem firmware or software stack, allowing specially crafted network packets to cause a system crash. This crash leads to a denial of service (DoS) condition without requiring any privileges, authentication, or user interaction, indicating a remote, unauthenticated attack vector. The CVSS v3.1 score of 7.5 reflects the ease of remote exploitation (AV:N, AC:L), no privileges required (PR:N), no user interaction (UI:N), and a high impact on availability (A:H) while confidentiality and integrity remain unaffected. The vulnerability affects the modem's ability to process incoming NR signals or commands, potentially causing the device to become unresponsive or reboot. Although no patches are currently linked, the vulnerability has been publicly disclosed and assigned a CVE, indicating that vendors and users should anticipate updates. No known exploits have been observed in the wild yet, but the risk remains significant given the widespread use of these chipsets in mobile devices. The vulnerability primarily threatens device availability, which can disrupt communications and services dependent on affected smartphones or IoT devices.

The primary impact of CVE-2025-61614 is a remote denial of service on devices using affected Unisoc chipsets, potentially causing system crashes or reboots. This can lead to significant disruption for end users and organizations relying on these devices for communication, business operations, or critical services. The lack of required privileges or user interaction lowers the barrier for attackers to exploit this vulnerability, increasing the risk of widespread attacks. For enterprises deploying affected Android devices, this could result in reduced device availability, impacting productivity and operational continuity. In sectors such as telecommunications, finance, healthcare, and government, where mobile device reliability is crucial, this vulnerability could be leveraged to cause service outages or degrade user experience. Additionally, IoT devices using these chipsets may also be vulnerable, potentially affecting industrial or consumer applications. Although confidentiality and integrity are not impacted, the availability disruption alone can have cascading effects on dependent systems and services.

Organizations and users should monitor Unisoc and device vendor advisories for patches addressing this vulnerability and apply them promptly once available. In the interim, network-level mitigations can reduce exposure by restricting or filtering traffic to the NR modem interface, especially from untrusted networks. Deploying intrusion detection/prevention systems (IDS/IPS) with signatures targeting malformed NR modem inputs may help detect or block exploit attempts. Device administrators should disable or limit unnecessary modem functionalities or remote access features where feasible. For enterprise-managed devices, enforcing strict network segmentation and using mobile device management (MDM) solutions to control device configurations can reduce risk. Additionally, educating users about the importance of timely updates and avoiding untrusted networks can mitigate exploitation likelihood. Vendors should prioritize releasing firmware or software updates that implement robust input validation and error handling in the NR modem component to prevent crashes. Continuous monitoring for exploit attempts and anomaly detection on affected devices is also recommended.