CVE-2025-57704 is a security vulnerability identified in Delta Electronics' EIP Builder software, specifically version 1.11. The vulnerability is classified under CWE-611, which pertains to Improper Restriction of XML External Entity (XXE) Reference. This type of vulnerability arises when an XML parser processes external entities within XML documents without proper restrictions, allowing attackers to manipulate the XML input to access unauthorized data or cause information disclosure. In this case, the vulnerability allows an attacker to exploit the XML file parsing mechanism in EIP Builder to disclose sensitive information from the system. The CVSS 3.1 base score is 5.5 (medium severity), with the vector indicating that the attack requires local access (AV:L), low attack complexity (AC:L), no privileges required (PR:N), but user interaction is necessary (UI:R). The impact affects confidentiality (C:H) but does not affect integrity or availability. No known exploits are currently reported in the wild, and no patches have been published yet. The vulnerability could be triggered by a user opening or processing a crafted XML file within the application, leading to unauthorized disclosure of local files or system information due to the improper handling of external XML entities.

For European organizations using Delta Electronics EIP Builder, this vulnerability poses a risk of sensitive information leakage from systems where the software is installed. Since the attack requires local access and user interaction, the threat vector is primarily through social engineering or insider threats where a malicious XML file is introduced and opened by a user. The confidentiality breach could expose intellectual property, configuration files, or other sensitive data relevant to industrial automation or control systems managed by EIP Builder. Given that Delta Electronics products are often used in industrial and manufacturing sectors, the impact could extend to operational technology environments, potentially undermining trust in system integrity and exposing critical infrastructure data. Although the vulnerability does not directly affect system integrity or availability, the information disclosure could facilitate further targeted attacks or espionage activities. European organizations with industrial automation deployments should be particularly vigilant, as such information leaks could have regulatory and compliance implications under GDPR and other data protection laws.

To mitigate this vulnerability, European organizations should implement the following specific measures: 1) Restrict access to systems running EIP Builder to trusted personnel only, minimizing the risk of malicious XML files being introduced. 2) Educate users about the risks of opening untrusted XML files and implement strict policies to avoid processing files from unknown or unverified sources. 3) Employ application whitelisting and endpoint protection solutions that can detect and block suspicious file parsing activities or unusual XML processing behavior. 4) Monitor system logs and application behavior for any anomalous file access or XML parsing errors that could indicate exploitation attempts. 5) Coordinate with Delta Electronics to obtain security updates or patches as soon as they become available and plan for timely deployment. 6) Consider network segmentation to isolate systems running EIP Builder from broader enterprise networks to limit lateral movement in case of compromise. 7) If possible, configure XML parsers or the application environment to disable external entity processing or use safer XML parsing libraries that enforce strict entity resolution policies.