Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:NSummary
CVE-2024-50689 is a critical-severity Authorization Bypass Through User-Controlled Key (CWE-639) vulnerability in Sungrowpower Isolarcloud. Its CVSS base score is 9.1 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 39th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified map to AC-24 (Access Control Decisions) and AC-3 (Access Enforcement) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2024-50689 is an insecure direct object reference (IDOR) vulnerability, classified as CWE-639, affecting SunGrow iSolarCloud platforms prior to the October 31, 2024 remediation. The flaw exists in the orgService API model, enabling attackers to access or manipulate objects without proper authorization checks. It carries a CVSS v3.1 base score of 9.1 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N), reflecting its critical severity due to high impacts on confidentiality and integrity.
Unauthenticated attackers can exploit this vulnerability remotely over the network with low attack complexity and no user interaction required. By manipulating object references in API requests to the orgService model, they can achieve unauthorized access to sensitive data and potentially modify it, compromising the integrity of iSolarCloud systems without affecting availability.
The vendor's security notice at https://en.sungrowpower.com/security-notice-detail-2/6116 details mitigation through the October 31, 2024 remediation. Security practitioners should verify and apply updates to affected iSolarCloud instances to address the IDOR issue.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-5285
Vulnerability Data
SunGrow iSolarCloud before the October 31, 2024 remediation is vulnerable to insecure direct object references (IDOR) via the orgService API model.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Enforcing approved authorizations on every access request structurally stops a user-controlled key from reaching another user's data.
Requiring explicit access-control decisions on each request blocks unauthorized key-driven access.
Least-privilege restrictions limit the scope of data reachable even if a key check is bypassed.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Enforcing authorization policy and least privilege directly blocks user-controlled key tampering that bypasses access checks.
Logical access controls prevent unauthorized data access that results from missing authorization checks on object references.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Security testing can detect missing authorization checks but does not prevent the weakness in production.
Information access restriction explicitly enforces that users may only retrieve data they are authorized to see, directly addressing user-controlled key bypass.
Access control policy directly requires enforcement of authorization rules that prevent unauthorized access via manipulated keys.
Managing access rights includes ensuring users can only access their own records and not bypass authorization by altering identifiers.
Privileged access rights control restricts what data each user may access, mitigating direct object reference attacks.
Secure development lifecycle includes authorization design but does not itself implement runtime access checks.