CVE-2025-52635 identifies a vulnerability in HCL AION version 2.0 related to the improper enforcement of trusted types in scripts under the Content Security Policy (CSP). Trusted types are a security mechanism designed to prevent cross-site scripting (XSS) attacks by restricting the types of scripts that can be executed in a web application. The vulnerability falls under CWE-1032, which concerns failures in enforcing security policies related to trusted types. Specifically, the CSP implementation in HCL AION 2.0 does not adequately enforce these trusted types, potentially allowing malicious scripts to bypass CSP protections. Although the vulnerability does not directly impact integrity or availability, it could lead to limited confidentiality breaches by enabling unauthorized script execution or data exposure. The CVSS 3.1 base score is 3.7, indicating low severity, with an attack vector of network (AV:N), high attack complexity (AC:H), no privileges required (PR:N), no user interaction (UI:N), and an unchanged scope (S:U). No known exploits have been reported, and no patches are currently linked, suggesting that the vendor may still be developing a fix or that the vulnerability is newly disclosed. Organizations using HCL AION 2.0 should monitor for updates and consider additional CSP hardening measures.

For European organizations, the primary impact of CVE-2025-52635 is a potential confidentiality risk due to the possibility of unauthorized script execution bypassing CSP protections. This could lead to limited exposure of sensitive information handled by HCL AION applications. However, the vulnerability does not affect data integrity or system availability, reducing the risk of service disruption or data tampering. The high attack complexity and lack of known exploits lower the immediate threat level. Nonetheless, organizations in sectors with strict data protection requirements, such as finance, healthcare, and government, should be cautious, as even limited confidentiality breaches can have regulatory and reputational consequences under GDPR and other frameworks. The impact is more pronounced for entities heavily reliant on HCL AION 2.0 for critical business processes or digital services.

European organizations should implement the following specific mitigations: 1) Monitor HCL's official channels for patches or updates addressing CVE-2025-52635 and apply them promptly once available. 2) Review and strengthen CSP configurations to enforce trusted types rigorously, potentially adding custom CSP directives that restrict script sources and types beyond default settings. 3) Conduct internal security testing focusing on CSP enforcement and trusted types to identify any exploitable weaknesses. 4) Employ runtime application self-protection (RASP) or web application firewalls (WAF) with rules designed to detect and block unauthorized script execution attempts. 5) Educate development and security teams about trusted types and CSP best practices to prevent similar issues in future deployments. 6) Limit exposure by restricting network access to HCL AION management interfaces and services to trusted internal networks or VPNs. These steps go beyond generic advice by focusing on CSP hardening and proactive monitoring specific to this vulnerability.