CVE-2025-44525 is a vulnerability identified in the Texas Instruments CC2652RB LaunchPad SimpleLink CC13XX and CC26XX SDK version 7.41.00.17. The issue stems from insufficient permission checks on critical fields within Bluetooth Low Energy (BLE) data packets, specifically related to the handling of LL_Length_Req packets. The LL_Length_Req packet is part of the BLE Link Layer protocol used to negotiate the maximum packet length between connected devices. Due to improper validation or permission enforcement on these fields, an attacker can craft malicious LL_Length_Req packets that exploit this weakness to trigger a Denial of Service (DoS) condition. This DoS could manifest as a crash, reboot, or unresponsiveness of the affected device, disrupting normal BLE communications and potentially impacting any applications or systems relying on these devices. The vulnerability does not require authentication or prior pairing, as it exploits the BLE link layer protocol, which is typically accessible during device discovery or connection phases. No known exploits have been reported in the wild yet, and no official patches or mitigations have been published at the time of disclosure. The lack of a CVSS score indicates that the vulnerability is newly disclosed and pending further analysis. However, the technical nature of the flaw suggests that it could be exploited remotely by an attacker within BLE radio range without user interaction, making it a significant concern for embedded systems and IoT devices using the affected SDK versions.

For European organizations, the impact of this vulnerability can be significant, especially those deploying IoT devices, industrial control systems, or consumer electronics that incorporate Texas Instruments CC2652RB or related SimpleLink CC13XX/CC26XX BLE modules. A successful DoS attack could disrupt critical operations, including manufacturing automation, smart building controls, healthcare devices, or logistics tracking systems that rely on BLE communications. This disruption could lead to operational downtime, loss of productivity, and potential safety risks if safety-critical systems are affected. Additionally, organizations in sectors such as automotive, smart cities, and telecommunications that use BLE-enabled devices for connectivity and monitoring could face service interruptions. The vulnerability's exploitation does not require physical access beyond BLE radio range, which could be exploited in public or semi-public environments, increasing the attack surface. While no data confidentiality or integrity compromise is indicated, the availability impact alone can have cascading effects on business continuity and service reliability.

Given the absence of an official patch, European organizations should implement several practical mitigations: 1) Conduct an inventory of all devices and systems using the affected Texas Instruments SDK versions to identify vulnerable assets. 2) Restrict physical access and BLE radio range exposure by implementing BLE signal containment measures such as shielding or limiting BLE advertising and connection windows. 3) Employ BLE network monitoring tools to detect anomalous LL_Length_Req packets or unusual BLE traffic patterns indicative of exploitation attempts. 4) Where possible, update or replace firmware with versions that include improved permission checks or vendor-recommended fixes once available. 5) Implement network segmentation to isolate BLE-enabled devices from critical IT infrastructure to minimize impact in case of DoS. 6) Educate operational technology and security teams about this vulnerability to increase awareness and readiness to respond to potential incidents. 7) Engage with Texas Instruments support channels for updates and advisories related to this vulnerability. These targeted steps go beyond generic advice by focusing on BLE-specific controls and operational practices relevant to the affected technology.