CVE-2025-36757 is a vulnerability identified in the SolaX Power SolaX Cloud platform, specifically categorized under CWE-306, which denotes Missing Authentication for a Critical Function. The vulnerability allows an attacker to bypass the administrator login screen by manipulating parameters, effectively circumventing the authentication mechanism. This bypass grants the attacker limited access to the system without requiring valid credentials or user interaction. The affected versions include all releases prior to June 27, 2025. The vulnerability is remotely exploitable over the network without any privileges or user interaction, as indicated by the CVSS vector. The CVSS 4.0 base score is 6.3, reflecting a medium severity level. The impact is limited in scope, as the attacker gains only partial access rather than full administrative control. No known exploits are currently reported in the wild, and no patches have been linked yet. The vulnerability arises from insufficient authentication controls on critical functions within the SolaX Cloud platform, which is used to manage and monitor solar power systems remotely. Parameter tampering suggests that the attacker can modify URL or request parameters to bypass login checks, indicating a flaw in session or access control logic. This type of vulnerability can lead to unauthorized access to sensitive operational data or control interfaces, potentially undermining system integrity and confidentiality.

For European organizations utilizing SolaX Cloud to manage solar energy infrastructure, this vulnerability poses a significant risk. Unauthorized access, even if limited, could allow attackers to view sensitive operational data, disrupt monitoring capabilities, or prepare for further attacks. Given the increasing reliance on renewable energy and smart grid technologies in Europe, any compromise of energy management platforms can have cascading effects on energy availability and reliability. Attackers might leverage this access to gather intelligence on energy production, potentially impacting energy trading or grid stability. While the vulnerability does not grant full administrative control, the partial access could be exploited to escalate privileges or interfere with system operations. This risk is particularly critical for energy providers, large-scale solar farms, and utility companies in Europe that depend on SolaX Cloud for operational oversight. Additionally, regulatory frameworks such as the EU NIS Directive emphasize the protection of critical infrastructure, making exploitation of this vulnerability a compliance concern. The absence of known exploits currently reduces immediate risk but does not eliminate the threat, especially as attackers often reverse-engineer disclosed vulnerabilities to develop exploits.

European organizations should prioritize the following mitigation steps: 1) Immediate verification of the SolaX Cloud version in use and plan for an upgrade to a patched version once available. 2) Implement network-level access controls such as IP whitelisting or VPN requirements to restrict access to the SolaX Cloud management interface. 3) Employ Web Application Firewalls (WAFs) with custom rules to detect and block parameter tampering attempts targeting authentication endpoints. 4) Conduct thorough security assessments and penetration testing focused on authentication and session management mechanisms within SolaX Cloud deployments. 5) Monitor logs and access patterns for anomalous activities indicative of authentication bypass attempts. 6) Engage with SolaX Power support channels to obtain security advisories and patches promptly. 7) Consider multi-factor authentication (MFA) integration if supported by the platform to add an additional security layer. 8) Isolate critical energy management systems from general corporate networks to reduce attack surface. These measures go beyond generic advice by focusing on compensating controls and proactive detection tailored to the nature of the vulnerability and the operational context of SolaX Cloud in energy infrastructure.