CVE-2025-11132 is a vulnerability identified in the NR (New Radio) modem firmware of Unisoc (Shanghai) Technologies Co., Ltd. chipsets, specifically the T8100, T9100, T8200, and T8300 models. These chipsets are integrated into mobile devices running Android versions 13 through 16. The root cause is improper input validation (CWE-20) within the modem's processing of network data, which can be exploited remotely by an attacker to trigger a system crash. This crash leads to a denial of service (DoS) condition on the affected device, disrupting its availability. The attack vector is network-based (AV:N), requiring no privileges (PR:N) or user interaction (UI:N), making exploitation relatively straightforward. The vulnerability does not compromise confidentiality or integrity but severely impacts availability (A:H). No patches have been publicly released at the time of publication, and no known exploits are reported in the wild. The vulnerability was reserved on 2025-09-28 and published on 2025-12-01. The CVSS v3.1 base score is 7.5, categorizing it as high severity. The affected products are commonly used in mobile devices, particularly in markets where Unisoc chipsets have significant penetration. The vulnerability could be exploited by sending specially crafted network packets to the modem, causing it to mishandle input and crash the system. This could disrupt mobile communications, impacting both consumer and enterprise users relying on these devices for connectivity.

For European organizations, the primary impact of CVE-2025-11132 is the potential disruption of mobile communications due to denial of service on devices using affected Unisoc chipsets. This can affect employees relying on mobile devices for critical communications, remote work, and access to corporate resources. Telecommunications providers using infrastructure or customer premises equipment with these chipsets may experience service outages or degraded network performance. The lack of confidentiality or integrity impact limits data breach risks, but availability loss can cause operational disruptions, especially in sectors dependent on continuous connectivity such as finance, healthcare, and emergency services. Additionally, the ease of remote exploitation without authentication increases the risk of widespread attacks, potentially targeting high-profile organizations or critical infrastructure. The absence of known exploits currently provides a window for proactive mitigation, but the high severity score and network attack vector necessitate urgent attention.

1. Monitor vendor communications closely for official patches or firmware updates addressing CVE-2025-11132 and apply them promptly once available. 2. Implement network-level filtering to detect and block malformed or suspicious packets targeting the NR modem interfaces, potentially using deep packet inspection tools tailored for mobile network protocols. 3. Employ anomaly detection systems to monitor for unusual modem behavior or frequent crashes indicative of exploitation attempts. 4. For enterprise mobile device management (MDM), enforce policies to restrict device usage to trusted networks and limit exposure to untrusted or public networks where exploitation risk is higher. 5. Coordinate with mobile network operators to understand if they can implement protective measures at the network infrastructure level to mitigate attack vectors. 6. Educate users about the importance of installing updates and reporting device instability promptly. 7. Consider device replacement or alternative hardware for critical roles if patches are delayed or unavailable. 8. Conduct penetration testing and vulnerability assessments focusing on mobile device modems to identify potential exploitation paths and validate mitigations.