CVE-2025-0645 is classified under CWE-434, which pertains to the unrestricted upload of files with dangerous types. This vulnerability exists in the Pyxis Signage product developed by Narkom Communication and Software Technologies Trade Ltd. Co. The core issue is that the application does not properly constrain file uploads through access control mechanisms, allowing an authenticated user with high privileges to upload files that could be malicious, such as executable scripts or binaries. The vulnerability is network exploitable (AV:N) with low attack complexity (AC:L), requiring high privileges (PR:H) but no user interaction (UI:N). The scope is unchanged (S:U), but the impact on confidentiality, integrity, and availability is high (C:H/I:H/A:H), as attackers could execute arbitrary code, manipulate signage content, or disrupt services. The vulnerability affects all versions of Pyxis Signage up to 31 January 2025. No patches or exploits are currently documented, but the risk remains significant due to the nature of the flaw and the criticality of the impacted systems, which are often used in public or enterprise environments for digital signage and information dissemination.

For European organizations, exploitation of this vulnerability could lead to severe consequences including unauthorized code execution on signage systems, data breaches, and service disruptions. Since digital signage often interfaces with public-facing networks and internal systems, attackers could leverage this flaw to pivot into broader enterprise networks, compromising sensitive information or causing reputational damage. Critical infrastructure, retail environments, transportation hubs, and corporate campuses using Pyxis Signage are particularly vulnerable. The high confidentiality, integrity, and availability impact means attackers could manipulate displayed content to spread misinformation or malware, disrupt operations, or exfiltrate data. The requirement for high privileges limits the attack vector to insiders or compromised accounts, but once exploited, the damage potential is extensive. This could also affect compliance with European data protection regulations if personal or sensitive data is exposed or manipulated.

European organizations should implement the following specific mitigations: 1) Immediately audit and restrict user privileges to minimize the number of accounts with high-level access capable of uploading files. 2) Implement strict file type validation and filtering on the upload functionality to block dangerous file types such as executables, scripts, or other potentially harmful formats. 3) Employ application-layer firewalls or web application firewalls (WAFs) with custom rules to detect and block suspicious upload attempts. 4) Monitor logs and network traffic for unusual upload activity or attempts to bypass ACLs. 5) Isolate Pyxis Signage systems from critical internal networks to limit lateral movement in case of compromise. 6) Engage with the vendor for patches or updates as soon as they become available and apply them promptly. 7) Conduct regular security assessments and penetration tests focusing on file upload mechanisms. 8) Educate administrators on secure configuration and the risks associated with file upload vulnerabilities.