CVE-2025-0643 identifies a Stored Cross-Site Scripting (XSS) vulnerability in the Pyxis Signage product developed by Narkom Communication and Software Technologies Trade Ltd. Co. The vulnerability is categorized under CWE-79, which involves improper neutralization of input during web page generation. Specifically, the product fails to adequately sanitize or encode user-supplied input before embedding it into web pages, allowing malicious scripts to be stored and later executed in the context of a victim's browser. The CVSS v3.1 score of 7.2 reflects a high-severity issue with an attack vector of network (AV:N), low attack complexity (AC:L), but requiring high privileges (PR:H) and no user interaction (UI:N). The impact metrics indicate full compromise potential on confidentiality, integrity, and availability (C:H/I:H/A:H). This means an attacker with authorized high-level access can inject persistent malicious JavaScript that executes whenever a legitimate user accesses the affected signage interface, potentially leading to session hijacking, credential theft, unauthorized actions, or pivoting within the network. The vulnerability affects all versions of Pyxis Signage up to January 31, 2025, with no patches currently available and no known exploits in the wild. The issue was reserved in January 2025 and published in November 2025, indicating recent discovery. Given the nature of digital signage systems—often integrated into enterprise environments and sometimes linked to critical operational technology—this vulnerability poses a significant risk if exploited.

For European organizations, the impact of CVE-2025-0643 can be substantial, especially for those deploying Pyxis Signage in environments where sensitive information is displayed or where signage interfaces are accessible to multiple users. Exploitation could lead to unauthorized disclosure of confidential data, manipulation of displayed content, or use of the signage system as a foothold for broader network compromise. This is particularly critical in sectors such as transportation, healthcare, retail, and public administration, where digital signage is prevalent. The high privileges required for exploitation suggest insider threats or compromised administrative accounts are the primary risk vectors. However, once exploited, the attacker can affect multiple users without their interaction, increasing the threat scope. The absence of known exploits currently reduces immediate risk but does not diminish the urgency for mitigation, as attackers often develop exploits rapidly after disclosure. Additionally, the persistent nature of stored XSS means that malicious scripts can remain active over time, causing prolonged exposure. European organizations must consider the regulatory implications of data breaches resulting from such vulnerabilities, including GDPR compliance and potential fines.

Mitigation should begin with immediate restriction and monitoring of administrative access to Pyxis Signage to prevent unauthorized high-privilege actions. Organizations should implement strict input validation and output encoding on all user-supplied data within the signage system interfaces, ideally applying context-aware encoding to neutralize script injection vectors. Since no official patches are currently available, consider deploying web application firewalls (WAFs) with custom rules to detect and block malicious payloads targeting the signage system. Regularly audit logs for suspicious activities indicative of XSS exploitation attempts. Network segmentation can limit the exposure of the signage system to only trusted users and systems. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers accessing the signage interface. Educate administrators on the risks of stored XSS and enforce strong authentication mechanisms, including multi-factor authentication, to reduce the risk of credential compromise. Finally, maintain close communication with the vendor for timely patch releases and apply updates promptly once available.