CVE-2026-0853 is a vulnerability classified under CWE-497 (Exposure of Sensitive System Information to an Unauthorized Control Sphere) found in the A-Plus Video Technologies AP-RM864P Network Video Recorder (NVR) device. The flaw allows unauthenticated remote attackers to access a debug page on the device without requiring any credentials or user interaction. This debug page exposes sensitive device status information, which could include system configuration, operational status, or other internal data useful for reconnaissance. The vulnerability is remotely exploitable over the network with low attack complexity and does not require privileges or authentication, making it accessible to any attacker with network access to the device. The CVSS v4.0 base score is 6.9, indicating a medium severity primarily due to confidentiality impact, as the vulnerability does not directly affect integrity or availability. No patches or fixes are currently linked, and no known exploits have been reported in the wild. The exposure of sensitive system information can facilitate further attacks by providing attackers with detailed knowledge of the device’s internal state, potentially aiding in privilege escalation or exploitation of other vulnerabilities. The affected product is the AP-RM864P model, with no specific affected firmware versions detailed beyond version '0'. The vulnerability was published on January 12, 2026, by the Taiwan Computer Emergency Response Team (twcert).

For European organizations, this vulnerability poses a risk primarily to confidentiality of sensitive system information on affected NVR devices. Exposure of debug information could enable attackers to map device configurations, identify other vulnerabilities, or understand network topology, increasing the likelihood of successful subsequent attacks. Organizations relying on these NVRs for video surveillance, especially in critical infrastructure sectors such as transportation, energy, or government facilities, could face increased risk of targeted attacks. Although the vulnerability does not directly compromise device integrity or availability, the intelligence gained could facilitate lateral movement or escalation attacks within networks. The lack of authentication and ease of remote exploitation increases the attack surface, particularly for devices exposed to untrusted networks or insufficiently segmented internal networks. The absence of known exploits reduces immediate risk but does not eliminate the potential for future exploitation. Overall, the vulnerability could undermine the security posture of surveillance systems, potentially impacting physical security monitoring and incident response capabilities.

European organizations should implement specific mitigations beyond generic advice to reduce exposure to CVE-2026-0853. First, restrict network access to the AP-RM864P devices by placing them behind firewalls and limiting access to trusted management networks only. Employ network segmentation to isolate NVR devices from general user and internet-facing networks, minimizing exposure to unauthenticated attackers. Disable or restrict access to debug interfaces if possible through device configuration or firmware updates. Monitor network traffic for unusual access attempts to the debug page or other management interfaces, using intrusion detection systems tuned for such activity. Engage with A-Plus Video Technologies for firmware updates or patches addressing this vulnerability and apply them promptly once available. If patches are not yet available, consider compensating controls such as VPN access for management or physical network isolation. Conduct regular security assessments and penetration testing on surveillance infrastructure to identify and remediate similar exposures. Maintain asset inventories to identify all deployed AP-RM864P devices and verify their network exposure status. Finally, train security teams to recognize reconnaissance activities that may leverage exposed debug information.