CVE-2024-36526 identifies a critical security vulnerability in ZKTeco's ZKBio CVSecurity version 6.1.1, a biometric access control and security management software. The vulnerability stems from the use of a hardcoded cryptographic key within the software. Hardcoded keys are embedded directly into the application code, making them accessible to attackers who can extract the key through reverse engineering or memory analysis. This key is used for cryptographic operations that protect sensitive data or authenticate devices and users. Because the key is static and known, attackers can bypass authentication mechanisms, decrypt confidential information, or forge valid credentials. The CVSS 3.1 base score of 9.8 reflects that the vulnerability is remotely exploitable over the network (AV:N), requires no privileges (PR:N), no user interaction (UI:N), and affects confidentiality, integrity, and availability (C:H/I:H/A:H). The vulnerability is categorized under CWE-259 (Use of Hard-coded Password), a common and dangerous security flaw. No patches or fixes are currently listed, and no exploits have been reported in the wild yet, but the risk remains high due to the ease of exploitation and the critical impact on security controls. Organizations relying on ZKBio CVSecurity for physical and logical access control should consider this vulnerability a top priority for remediation once a patch is available.

The impact of CVE-2024-36526 is severe for organizations using ZKTeco ZKBio CVSecurity v6.1.1. Exploitation can lead to full compromise of the biometric security system, allowing attackers to bypass authentication controls, gain unauthorized access to restricted areas, and manipulate security logs or configurations. Confidential data protected by the software, including biometric templates and access credentials, can be decrypted or forged, undermining trust in the system. Integrity of security policies and audit trails can be compromised, enabling attackers to cover their tracks or escalate privileges. Availability may also be affected if attackers disrupt the system or cause denial of service. This vulnerability threatens physical security and IT infrastructure, especially in environments relying on biometric authentication for sensitive facilities such as government buildings, corporate offices, and critical infrastructure. The ease of remote exploitation without authentication or user interaction increases the likelihood of attacks and potential widespread impact.

Given the absence of an official patch, organizations should immediately engage with ZKTeco for updates or advisories. In the interim, restrict network access to ZKBio CVSecurity management interfaces to trusted internal networks only, using firewalls and network segmentation. Implement strict monitoring and logging of all authentication and cryptographic operations to detect anomalous activity indicative of exploitation attempts. Consider deploying additional layers of authentication or physical security controls to compensate for the compromised cryptographic key. Conduct a thorough audit of all devices and credentials managed by ZKBio CVSecurity to identify potential compromises. Plan for rapid deployment of vendor patches once available and test updates in controlled environments before production rollout. Educate security teams about the risks of hardcoded keys and ensure secure coding practices in future software development. Finally, maintain an incident response plan tailored to biometric and physical security system breaches.