Cyber Posture

CVE-2025-56082

High

Published: 11 December 2025

Published
11 December 2025
Modified
26 December 2025
KEV Added
—
Patch
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CVSS Score 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0047 64.6th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

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.

Mitigating Controls (NIST 800-53 r5)AI

SI-2 Flaw Remediation good match
prevent

Directly requires identification, reporting, and correction of the OS command injection flaw in the LuCI controller's check_changes function.

SI-10 Information Input Validation good match
prevent

Mandates validation of POST request inputs to the vulnerable endpoint, preventing crafted payloads from executing arbitrary OS commands.

AC-6 Least Privilege good match
prevent

Enforces least privilege to restrict low-privileged users from accessing the admin controller endpoint exploited in this CVE.

Security SummaryAI

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)
CWE-78

Affected Products

ruijie
rg-bcr600w firmware
all versions

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1059.004 Unix Shell Execution
Adversaries may abuse Unix shell commands and scripts for execution.
attack.mitre.org →
T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
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).

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

References