CVE-2025-0643 is a Stored Cross-Site Scripting (XSS) vulnerability classified under CWE-79, affecting the Pyxis Signage product developed by Narkom Communication and Software Technologies Trade Ltd. Co. The vulnerability stems from improper neutralization of input during web page generation, which allows malicious input to be stored and later rendered in the web interface without adequate sanitization or encoding. This flaw enables an attacker with high-level privileges (PR:H) to inject arbitrary JavaScript code that executes in the context of other users accessing the affected signage management interface. The CVSS 3.1 base score of 7.2 reflects the network attack vector (AV:N), low attack complexity (AC:L), required privileges (PR:H), no user interaction (UI:N), unchanged scope (S:U), and high impact on confidentiality, integrity, and availability (C:H/I:H/A:H). The vulnerability affects all versions of Pyxis Signage up to the date 31 January 2025. Although no public exploits are currently known, the potential for stored XSS to facilitate session hijacking, credential theft, or pivoting to other systems makes this a significant threat. The absence of published patches necessitates immediate risk mitigation. The vulnerability was reserved early in 2025 and published in November 2025, indicating recent discovery and disclosure. Given the nature of digital signage systems, which may be integrated into corporate networks and public-facing environments, exploitation could lead to widespread impact.

For European organizations, this vulnerability poses a substantial risk, especially for those deploying Pyxis Signage in critical environments such as transportation hubs, retail chains, corporate campuses, and public information systems. Successful exploitation could lead to unauthorized disclosure of sensitive information, manipulation of displayed content, and disruption of signage services, undermining operational integrity and public trust. The high impact on confidentiality, integrity, and availability means attackers could steal credentials, inject misleading or malicious content, or cause denial of service. Since the attack requires high privileges, insider threats or compromised administrative accounts are primary vectors. The lack of user interaction requirement facilitates automated exploitation once access is gained. European entities with regulatory obligations under GDPR must consider the data breach implications and potential compliance penalties. Additionally, the integration of signage systems with other IT infrastructure could allow lateral movement within networks, amplifying the threat.

Given the absence of official patches, European organizations should implement immediate compensating controls. These include restricting administrative access to Pyxis Signage interfaces using network segmentation and strict firewall rules, enforcing strong multi-factor authentication for privileged accounts, and conducting regular audits of user privileges to minimize exposure. Input validation and output encoding should be applied at the application layer if possible, or via web application firewalls (WAFs) configured to detect and block XSS payloads targeting the signage system. Monitoring logs for unusual administrative activity can help detect exploitation attempts early. Organizations should also prepare incident response plans specific to this vulnerability and coordinate with Narkom Communication for timely patch deployment once available. Training administrators on secure usage and awareness of XSS risks is recommended. Finally, consider isolating the signage management network from critical business systems to limit potential lateral movement.