CVE-2024-37016 identifies a vulnerability in the Mengshen Wireless Door Alarm M70, disclosed in July 2024. The flaw allows an attacker to bypass the device's authentication mechanism through a capture-replay attack. This attack involves intercepting legitimate wireless authentication signals and replaying them to the device to gain unauthorized access. The vulnerability is categorized under CWE-294, which relates to improper authentication, indicating that the device does not adequately verify the authenticity or freshness of authentication tokens or signals. The CVSS v3.1 score is 6.8 (medium), reflecting that the attack vector requires physical proximity (AV:P - physical), has low attack complexity (AC:L), requires no privileges (PR:N), and no user interaction (UI:N). The impact on confidentiality, integrity, and availability is high (C:H/I:H/A:H), meaning an attacker can fully compromise the device's security functions. No patches or fixes have been published yet, and no known exploits are reported in the wild, but the vulnerability poses a significant risk to environments relying on this device for physical security. The lack of authentication robustness could allow attackers to disable alarms, cause false alarms, or manipulate device states, undermining security monitoring.

The vulnerability can severely impact organizations relying on the Mengshen Wireless Door Alarm M70 for physical security. Unauthorized access to the device could allow attackers to disable alarms or trigger false alarms, leading to potential unauthorized physical entry or denial of service. This compromises the confidentiality of security status information, the integrity of alarm signals, and the availability of the alarm system. Facilities such as offices, warehouses, or residential buildings using these devices may face increased risk of intrusion or sabotage. The physical proximity requirement limits remote exploitation but does not eliminate risk in densely populated or accessible environments. The absence of patches means the vulnerability remains exploitable, increasing the window of exposure. Additionally, attackers could leverage this vulnerability as part of a broader attack chain targeting physical and cyber assets.

1. Restrict physical access to the vicinity of the wireless door alarm to prevent attackers from capturing authentication signals. 2. Implement network segmentation to isolate the alarm system from critical IT infrastructure, limiting lateral movement if compromised. 3. Monitor alarm device behavior for anomalies such as unexpected disarm or repeated alarm triggers, which may indicate exploitation attempts. 4. Use additional physical security controls (e.g., wired alarms, surveillance cameras) to complement wireless alarms. 5. Engage with the vendor to obtain updates or patches as soon as they become available. 6. Consider replacing vulnerable devices with models that implement robust authentication protocols resistant to replay attacks, such as those using rolling codes or cryptographic challenge-response mechanisms. 7. Educate security personnel about the risks and signs of wireless alarm tampering. 8. If possible, employ RF shielding or jamming techniques to prevent unauthorized signal capture in sensitive areas.