CVE-2025-62369 is a remote code execution (RCE) vulnerability identified in the open-source digital signage platform xibo-cms, specifically in versions 4.3.0 and earlier. The vulnerability is rooted in improper control over code generation (CWE-94) within the Module Templating functionality of the CMS Developer menu. Authenticated users possessing the "System -> Add/Edit custom modules and templates" permission can manipulate Twig filters, a templating engine used by xibo-cms, to execute arbitrary server-side functions with the privileges of the web server user. This flaw allows an attacker to bypass intended code execution restrictions, potentially leading to full system compromise, data exfiltration, or disruption of service. The vulnerability does not require user interaction beyond authentication but does require elevated permissions, limiting exploitation to trusted users or those who have compromised such accounts. The CVSS v3.1 score of 7.2 reflects high severity due to network exploitability, low attack complexity, and high impact on confidentiality, integrity, and availability. The issue was publicly disclosed on November 4, 2025, and fixed in version 4.3.1. Workarounds include applying patches released for versions 4.1 and 4.2. No known exploits have been reported in the wild as of the publication date. The vulnerability highlights the risks inherent in allowing template customization without strict input validation and execution control.

For European organizations, the impact of CVE-2025-62369 can be significant, especially for those relying on xibo-cms for digital signage in critical environments such as retail, transportation hubs, corporate communications, and public information systems. Successful exploitation could lead to unauthorized code execution on the CMS server, resulting in data breaches, defacement of digital signage content, disruption of services, or pivoting to other internal systems. Given that the vulnerability requires authenticated access with elevated permissions, the primary risk vector is insider threats or compromised administrator accounts. The high confidentiality, integrity, and availability impact means sensitive corporate or customer information could be exposed or manipulated, damaging reputation and compliance posture under regulations like GDPR. Additionally, disruption of digital signage could affect operational communications and customer experience. The lack of known exploits in the wild reduces immediate risk but does not eliminate the threat, especially as attackers may develop exploits post-disclosure.

1. Upgrade xibo-cms installations to version 4.3.1 immediately to apply the official fix. 2. If upgrading is not immediately feasible, apply the patch commits available for versions 4.1 and 4.2 to mitigate the vulnerability. 3. Restrict the "System -> Add/Edit custom modules and templates" permission strictly to trusted administrators and regularly audit accounts with this privilege. 4. Implement strong authentication mechanisms, including multi-factor authentication (MFA), to reduce the risk of credential compromise. 5. Monitor CMS logs for unusual activity related to module templating or unexpected code execution attempts. 6. Employ network segmentation to isolate the CMS server from critical internal systems to limit lateral movement in case of compromise. 7. Conduct regular security training for administrators to recognize phishing and social engineering attempts that could lead to credential theft. 8. Review and harden Twig template usage policies and consider disabling custom module/template editing if not required. 9. Maintain up-to-date backups of CMS configurations and content to enable rapid recovery if exploitation occurs.