CVE-2025-54927 is a path traversal vulnerability (CWE-22) identified in Schneider Electric's EcoStruxure™ Power Monitoring Expert (PME) product, affecting versions 2022, 2023, 2024, and 2024 R2. This vulnerability arises from improper validation and limitation of pathname inputs, allowing an authenticated attacker to craft malicious path inputs that bypass directory restrictions. By exploiting this flaw, an attacker with valid credentials can access sensitive files outside the intended directory scope, potentially exposing confidential configuration files, logs, or other critical data. The vulnerability does not require user interaction beyond authentication, and the attack vector is network-based (AV:N), with low attack complexity (AC:L). The CVSS v3.1 base score is 4.9 (medium severity), reflecting high confidentiality impact (C:H), no impact on integrity or availability, and requiring high privileges (PR:H). No known exploits are currently reported in the wild, and no patches have been published yet. The vulnerability's root cause is insufficient sanitization or restriction of pathname inputs, which is a common security weakness in file handling mechanisms within software systems.

For European organizations using Schneider Electric's EcoStruxure PME, this vulnerability poses a risk of unauthorized disclosure of sensitive operational data related to power monitoring and management. Such data could include system configurations, operational logs, or other proprietary information critical to infrastructure management. Exposure of this information could aid attackers in reconnaissance or facilitate further attacks on industrial control systems or critical infrastructure. Given that PME is used in energy management and industrial environments, unauthorized access could undermine operational confidentiality and potentially lead to compliance violations under regulations like GDPR if personal or sensitive data is involved. Although the vulnerability does not directly affect system integrity or availability, the confidentiality breach could have cascading effects on trust and operational security. European energy providers, utilities, and industrial operators relying on PME are particularly at risk, as attackers could leverage this vulnerability to gain insights into system configurations or identify weaknesses for subsequent exploitation.

To mitigate this vulnerability, European organizations should implement the following specific measures: 1) Restrict access to PME management interfaces strictly to trusted internal networks and enforce strong authentication mechanisms to reduce the risk of authenticated attacker presence. 2) Monitor and audit file access logs within PME to detect unusual or unauthorized file retrieval attempts indicative of path traversal exploitation. 3) Employ network segmentation to isolate PME systems from general IT networks, limiting lateral movement in case of compromise. 4) Apply strict input validation and sanitization controls on any user-supplied path inputs, if custom integrations or scripts interact with PME, to prevent exploitation. 5) Coordinate with Schneider Electric for timely patch deployment once available, and subscribe to vendor security advisories for updates. 6) Conduct regular security assessments and penetration tests focusing on file access controls within PME environments. 7) Implement compensating controls such as Data Loss Prevention (DLP) solutions to monitor sensitive file exfiltration attempts. These steps go beyond generic advice by focusing on network architecture, monitoring, and vendor coordination specific to the PME environment.