CVE-2024-50698
Published: 24 January 2025
Summary
CVE-2024-50698 is a critical-severity Heap-based Buffer Overflow (CWE-122) vulnerability in Sungrowpower Winet-S Firmware. Its CVSS base score is 9.8 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 26.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-16 (Memory Protection).
Deeper analysis
CVE-2024-50698 is a heap-based buffer overflow vulnerability affecting SunGrow WiNet-SV200 firmware versions 001.00.P027 and earlier. The flaw stems from insufficient bounds checks on MQTT message content, as classified under CWE-122: Heap-based Buffer Overflow. It carries a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), marking it as critical due to its potential for severe impact.
Attackers can exploit this vulnerability remotely over the network without authentication, privileges, or user interaction, requiring only low complexity. Exploitation could grant high-level impacts on confidentiality, integrity, and availability, such as arbitrary code execution, device takeover, or denial of service on the affected WiNet-SV200 component.
The vendor has published a security notice with mitigation guidance at https://en.sungrowpower.com/security-notice-detail-2/5961. Security practitioners should consult this advisory for patching instructions and workarounds applicable to vulnerable SunGrow deployments.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-44594
Vulnerability details
SunGrow WiNet-SV200.001.00.P027 and earlier versions is vulnerable to heap-based buffer overflow due to bounds checks of the MQTT message content.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Remote unauthenticated heap buffer overflow in network-exposed firmware (MQTT) directly enables arbitrary code execution via public-facing application exploitation.
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Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly addresses the root cause of insufficient bounds checks on MQTT message content by enforcing validation of input length and format.
Implements memory safeguards like address space randomization and non-executable heaps to prevent exploitation of heap-based buffer overflows.
Ensures timely patching of the specific firmware flaw in SunGrow WiNet-SV200 versions up to 001.00.P027 as advised by the vendor.