CVE-2025-11132 is a vulnerability identified in the NR (New Radio) modem firmware of Unisoc (Shanghai) Technologies Co., Ltd.'s T8100, T9100, T8200, and T8300 chipsets. These chipsets are integrated into various 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 without requiring any authentication or user interaction. Successful exploitation leads to a system crash, effectively causing a denial of service (DoS) condition on the device. The vulnerability does not grant the attacker any additional execution privileges, nor does it compromise confidentiality or integrity. The CVSS v3.1 base score is 7.5, indicating high severity primarily due to the impact on availability combined with the ease of remote exploitation (attack vector: network, attack complexity: low). No patches or mitigations have been officially released at the time of publication, and no known exploits have been observed in the wild. The vulnerability affects a broad range of Android versions (13 to 16), suggesting a wide potential attack surface. Given the critical role of modems in mobile communications, exploitation could disrupt device connectivity and availability, impacting end-users and services relying on these devices.

For European organizations, the primary impact of CVE-2025-11132 is the potential disruption of mobile device availability due to remote denial of service attacks. This can affect employees’ mobile communications, IoT devices, and critical infrastructure components that rely on Unisoc modems. Industries such as telecommunications, manufacturing with IoT deployments, and public safety could experience operational interruptions. Although the vulnerability does not allow data theft or privilege escalation, the loss of device availability can degrade business continuity and service reliability. In sectors with stringent uptime requirements, such as finance or healthcare, even temporary denial of service could have cascading effects. Additionally, organizations with large fleets of mobile devices using affected chipsets may face increased support costs and operational challenges. The absence of known exploits reduces immediate risk but also underscores the importance of proactive mitigation before exploitation occurs.

1. Maintain an up-to-date inventory of devices incorporating Unisoc T8100/T9100/T8200/T8300 chipsets to identify exposure. 2. Monitor vendor advisories and security bulletins from Unisoc and device manufacturers for patches or firmware updates addressing this vulnerability. 3. Implement network-level filtering and anomaly detection to identify and block malformed or suspicious NR modem inputs that could trigger the vulnerability. 4. Where feasible, restrict network access to critical devices to trusted sources to reduce exposure to remote attacks. 5. Employ mobile device management (MDM) solutions to enforce security policies and facilitate rapid deployment of updates once available. 6. Conduct regular security assessments and penetration testing focusing on modem and network interfaces to detect potential exploitation attempts. 7. Educate IT and security teams about the vulnerability to ensure prompt incident response if denial of service symptoms arise. 8. Consider temporary operational controls such as limiting device use in high-risk environments until patches are applied.