CVE-2025-56082
Published: 11 December 2025
Summary
CVE-2025-56082 is a high-severity OS Command Injection (CWE-78) vulnerability in Ruijie Rg-Bcr600W Firmware. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 45.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 AC-6 (Least Privilege) and SI-10 (Information Input Validation).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Directly requires identification, reporting, and correction of the OS command injection flaw in the LuCI controller's check_changes function.
Mandates validation of POST request inputs to the vulnerable endpoint, preventing crafted payloads from executing arbitrary OS commands.
Enforces least privilege to restrict low-privileged users from accessing the admin controller endpoint exploited in this CVE.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
OS command injection via web admin interface (LuCI) enables exploitation of public-facing application (T1190), Unix shell command execution (T1059.004), and privilege escalation from low-priv user to arbitrary OS commands (T1068).
NVD Description
OS Command Injection vulnerability in Ruijie RG-BCR RG-BCR600W allowing attackers to execute arbitrary commands via a crafted POST request to the check_changes in file /usr/lib/lua/luci/controller/admin/common.lua.
Deeper analysisAI
CVE-2025-56082 is an OS Command Injection vulnerability (CWE-78) in the Ruijie RG-BCR RG-BCR600W device. The issue affects the check_changes function in the file /usr/lib/lua/luci/controller/admin/common.lua, where a crafted POST request enables attackers to execute arbitrary operating system commands. Published on 2025-12-11, 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 its potential for significant impact.
Attackers with low privileges, such as authenticated users, can exploit this remotely over the network with low complexity and no user interaction required. Successful exploitation grants the ability to execute arbitrary commands on the underlying OS, potentially leading to full device compromise, data theft, persistence, or further lateral movement within the network.
Advisories and detailed reports, including potential patches or workarounds, are available in the following references: https://1drv.ms/f/c/12406a392c92914b/Evvem8Mw6SlNh-ZJpY_9SAsBq2iDi88TFdFdA1Am3PdfCQ?e=YeLYxb, https://1drv.ms/t/c/12406a392c92914b/EfCFw0RRV0hJvpV0rBLvTvABtWGVbrHzIPwPyku7phQ3Dg?e=GMqLpV, and https://github.com/flegoity/Ruijie-Multiple-Devices-Vulnerability-Reports-for-CVE/blob/main/CVE-2025-56082.md.
Details
- CWE(s)