CVE-2026-23648 identifies a critical security vulnerability in the Glory Global Solutions RBG-100 recycler systems, specifically within the ISPK-08 software component. The vulnerability stems from incorrect permission assignments (CWE-732) on multiple system binaries that are executed with root privileges. These binaries are configured with overly permissive file permissions, allowing unprivileged local users to write to and execute these files. This misconfiguration enables an attacker who has local access—such as an insider or someone who has gained limited access to the device—to replace or modify these binaries. By doing so, the attacker can execute arbitrary code with root-level privileges, effectively escalating their privileges from a low-privileged user to root. The CVSS 4.0 base score of 8.5 reflects the high impact on confidentiality, integrity, and availability, with low attack complexity and no requirement for user interaction or authentication beyond local access. The vulnerability does not require network access, limiting remote exploitation but making physical or local access attacks highly effective. No patches or exploits are currently reported, but the vulnerability's nature makes it a critical concern for environments where these devices are deployed. The root cause is a failure to enforce the principle of least privilege in file permission settings, a fundamental security best practice. This vulnerability could be leveraged to compromise the entire system, potentially leading to data theft, system manipulation, or disruption of operations.

For European organizations, the impact of CVE-2026-23648 is significant, particularly for those using Glory RBG-100 recycler systems in cash handling, banking, retail, or logistics sectors. Successful exploitation allows attackers to gain root privileges, leading to full system compromise. This can result in unauthorized access to sensitive financial data, manipulation or disruption of cash recycling processes, and potential downtime affecting business continuity. The integrity of financial transactions and audit trails may be compromised, undermining trust and regulatory compliance. Additionally, attackers could use the escalated privileges to move laterally within internal networks, increasing the risk of broader organizational compromise. Given the physical nature of the devices, insider threats or attackers with physical access pose the greatest risk. The vulnerability's local access requirement limits remote exploitation but does not diminish the severity for organizations with on-premises deployments. The lack of known exploits in the wild provides a window for proactive mitigation but also means attackers may develop exploits targeting this vulnerability soon.

To mitigate CVE-2026-23648, organizations should immediately audit and correct file permissions on all system binaries within the ISPK-08 software component on RBG-100 devices. Permissions must be restricted so that only the root user has write and execute rights, eliminating unprivileged user access. Implement file integrity monitoring to detect unauthorized changes to critical binaries. Limit physical and local access to these devices by enforcing strict access controls, surveillance, and personnel vetting. Where possible, deploy endpoint security solutions capable of detecting privilege escalation attempts. Regularly update and patch device firmware and software once vendor patches become available. Establish a secure configuration baseline for these devices and conduct periodic compliance checks. Train staff on the risks of local privilege escalation and the importance of safeguarding physical access. Consider network segmentation to isolate these devices from broader enterprise networks to reduce lateral movement risk. Finally, maintain an incident response plan that includes scenarios involving local privilege escalation on critical infrastructure devices.