CVE-2025-13932 identifies a Broken Access Control vulnerability in the SolisCloud Monitoring Platform, specifically in its Cloud API and Device Control API versions 1 and 2. The root cause is an Insecure Direct Object Reference (IDOR), where the API fails to properly validate user authorization when accessing plant data. Authenticated users can manipulate the plant_id parameter in API requests to retrieve detailed information about any plant, regardless of ownership or permission. This flaw undermines the principle of least privilege and exposes sensitive operational data, which may include energy production metrics, device statuses, and potentially personally identifiable information related to plant operators. The vulnerability does not require elevated privileges beyond authentication, nor does it require user interaction beyond sending crafted API requests. Although no exploits have been reported in the wild, the vulnerability poses a significant risk if weaponized by insiders or external attackers with valid credentials. The lack of a CVSS score necessitates an assessment based on impact and exploitability factors, indicating a high severity due to the potential confidentiality breach and integrity compromise of operational data. The vulnerability affects critical infrastructure monitoring systems, making it a concern for energy providers and grid operators relying on SolisCloud services.

For European organizations, this vulnerability could lead to unauthorized disclosure of sensitive operational data related to solar power plants, including performance metrics and device statuses. Such data exposure can facilitate industrial espionage, competitive disadvantage, or targeted sabotage. Attackers with access could manipulate or disrupt monitoring activities by gaining insights into system configurations and operational states. This could undermine trust in renewable energy management platforms and potentially impact grid stability if attackers use the information to coordinate attacks. The breach of confidentiality and integrity could also lead to regulatory non-compliance under GDPR if personal data is involved. Organizations operating critical infrastructure or large-scale solar farms are particularly at risk, as attackers may leverage this vulnerability to gain footholds or conduct reconnaissance for further attacks. The absence of known exploits suggests the threat is currently theoretical but warrants proactive mitigation to prevent future exploitation.

Immediate mitigation should focus on implementing strict server-side authorization checks to validate that the authenticated user has permission to access the requested plant_id data. Organizations should audit API access logs to detect anomalous requests involving unauthorized plant_id values. Network segmentation and API gateway controls can help restrict access to the SolisCloud APIs. Until a vendor patch is released, consider limiting API access to trusted users and employing multi-factor authentication to reduce the risk of credential compromise. Regularly review and update access control policies to enforce the principle of least privilege. Engage with SolisCloud to obtain timelines for patches or updates addressing this vulnerability. Additionally, implement monitoring and alerting for unusual API usage patterns that may indicate exploitation attempts. Conduct security awareness training for users with API access to recognize and report suspicious activity.