CVE-2025-56101
Published: 11 December 2025
Summary
CVE-2025-56101 is a high-severity OS Command Injection (CWE-78) vulnerability in Ruijie M18-Ew Firmware. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Network Device CLI (T1059.008); ranked at the 46.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).
Deeper analysis
CVE-2025-56101, published on 2025-12-11, is an OS Command Injection vulnerability (CWE-78) in the Ruijie M18 device running firmware version EW_3.0(1)B11P226_M18_10223116. The issue affects the module_get function in the file /usr/local/lua/dev_sta/networkConnect.lua, where attackers can execute arbitrary commands through a crafted POST request. It carries a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), indicating high severity due to network accessibility, low complexity, and significant impacts across confidentiality, integrity, and availability.
Attackers with low privileges (PR:L), such as authenticated users, can exploit this over the network without requiring user interaction. By sending a specially crafted POST request to the vulnerable endpoint, they gain the ability to execute arbitrary operating system commands on the device, potentially leading to full compromise including data theft, modification, or disruption of services.
Advisories and detailed reports on mitigation, patches, or workarounds are referenced in the following sources: https://1drv.ms/f/c/12406a392c92914b/EmXarTTNPwFHjk8lLwQIqj8Ba9nlq-owLMBtEKpBwMrn5A?e=vvi2dM, https://1drv.ms/t/c/12406a392c92914b/EbNlU_0K0v1Krzq7CaUWn0AB_yu3ICrdmwoVuS2txFGMhA?e=0gIUMh, and https://github.com/flegoity/Ruijie-Multiple-Devices-Vulnerability-Reports-for-CVE/blob/main/CVE-2025-56101.md.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-202731
Vulnerability details
OS Command Injection vulnerability in Ruijie M18 EW_3.0(1)B11P226_M18_10223116 allowing attackers to execute arbitrary commands via a crafted POST request to the module_get in file /usr/local/lua/dev_sta/networkConnect.lua.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
The OS command injection vulnerability enables arbitrary command execution on a network device via remote exploitation (T1210) and abuse of network device CLI capabilities (T1059.008).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly prevents OS command injection by validating and sanitizing crafted POST request inputs to the module_get function in /usr/local/lua/dev_sta/networkConnect.lua.
Requires timely patching of the command injection flaw in firmware EW_3.0(1)B11P226_M18_10223116 to eliminate arbitrary command execution capability.
Enforces least privilege on the process handling the vulnerable endpoint, limiting the impact and scope of any successfully injected OS commands.