CVE-2025-67263 is a stored cross-site scripting (XSS) vulnerability identified in Abacre Retail Point of Sale (POS) software version 14.0.0.396, specifically within the Clients module. The vulnerability stems from improper sanitization of user-supplied input in the Name and Surname fields, which are stored persistently in the backend database. An attacker can exploit this flaw by injecting malicious HTML or JavaScript code into these fields. When other users or administrators access the affected client records, the malicious script executes in their browsers under the context of the POS application, potentially leading to session hijacking, credential theft, or unauthorized actions within the application. The vulnerability does not require any privileges to exploit, but user interaction is necessary to trigger the payload. The CVSS v3.1 base score of 6.1 reflects a medium severity, with an attack vector of network (remote), low attack complexity, no privileges required, but user interaction needed. The scope is changed, indicating that the vulnerability affects components beyond the initially vulnerable module. There is no impact on availability, but confidentiality and integrity can be partially compromised. No known exploits have been reported in the wild, and no official patches or updates have been released at the time of publication. The vulnerability is classified under CWE-79, which is the standard category for cross-site scripting issues. Given the nature of POS systems handling sensitive retail data and potentially payment information, exploitation could have serious consequences if combined with other vulnerabilities or social engineering attacks.

For European organizations, particularly those in the retail sector using Abacre Retail POS 14.0.0.396, this vulnerability poses a risk of client-side script execution leading to session hijacking, unauthorized access, or data leakage. While the direct impact on availability is none, the compromise of confidentiality and integrity can result in theft of customer data, manipulation of client records, or unauthorized transactions. This could damage customer trust and lead to regulatory penalties under GDPR if personal data is exposed. Retail environments often have interconnected systems; thus, an attacker leveraging this XSS flaw might pivot to other internal systems or escalate privileges. The requirement for user interaction means phishing or social engineering could be used to maximize impact. Although no exploits are currently known in the wild, the medium severity and ease of injection make it a credible threat that should be addressed promptly to avoid potential exploitation.

To mitigate CVE-2025-67263, organizations should implement strict input validation and sanitization on the Name and Surname fields within the Clients module to prevent injection of malicious scripts. Employing output encoding or context-aware escaping when rendering user-supplied data in the web interface is critical to prevent script execution. If possible, apply web application firewalls (WAF) with rules to detect and block XSS payloads targeting the POS system. Restrict user permissions to limit who can add or edit client data, reducing the attack surface. Conduct regular security audits and penetration testing focused on input handling in the POS software. Since no official patches are available, consider isolating the POS system network-wise to limit exposure and monitor logs for suspicious activities. Educate staff about phishing and social engineering risks to reduce the chance of user interaction triggering the exploit. Finally, maintain up-to-date backups of client data to enable recovery if data integrity is compromised.