Cyber Posture

CVE-2025-56109

HighPublic PoC

Published: 11 December 2025

Published
11 December 2025
Modified
26 January 2026
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 0.0125 79.4th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Description

OS Command Injection vulnerability in Ruijie RG-BCR RG-BCR860 allowing attackers to execute arbitrary commands via a crafted POST request to the action_wireless in file /usr/lib/lua/luci/control/admin/wireless.lua.

Mitigating Controls (NIST 800-53 r5)AI

SI-10 Information Input Validation good match
prevent

Directly prevents OS command injection by requiring validation and sanitization of crafted POST request inputs to the action_wireless function in wireless.lua.

SI-2 Flaw Remediation good match
prevent

Mitigates the specific vulnerability through timely identification, testing, and installation of patches for the flaw in /usr/lib/lua/luci/control/admin/wireless.lua.

AC-6 Least Privilege partial match
prevent

Limits damage from command injection by enforcing least privilege on low-privilege authenticated users accessing the vulnerable wireless administration endpoint.

Security SummaryAI

CVE-2025-56109 is an OS Command Injection vulnerability (CWE-78) in the Ruijie RG-BCR RG-BCR860 device. The flaw exists in the action_wireless function of the file /usr/lib/lua/luci/control/admin/wireless.lua, enabling attackers to execute arbitrary operating system commands through a crafted POST request. 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).

The vulnerability can be exploited by attackers with low privileges, such as authenticated users with minimal access rights on the affected device. Exploitation occurs remotely over the network with low complexity and no user interaction required. Successful attacks allow arbitrary command execution, resulting in high impacts to confidentiality, integrity, and availability, potentially leading to full device compromise.

Mitigation guidance and additional details are provided in the following advisories and reports: https://1drv.ms/f/c/12406a392c92914b/EqEQemupso9DldgG-EcUI8IBLpEWP_S-f6vpeUtYztYYCg?e=gX4A10, https://1drv.ms/t/c/12406a392c92914b/Eebxh85meOlFnvAANaOt7WgBy_WVGYtW6X8dzvZBZSenbw?e=aaqmPN, and https://github.com/flegoity/Ruijie-Multiple-Devices-Vulnerability-Reports-for-CVE/blob/main/CVE-2025-56109.md.

Details

CWE(s)
CWE-78

Affected Products

ruijie
rg-bcr860 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 →
T1059.008 Network Device CLI Execution
Adversaries may abuse scripting or built-in command line interpreters (CLI) on network devices to execute malicious command and payloads.
attack.mitre.org →
Why these techniques?

CVE enables exploitation of public-facing web application (T1190) via crafted POST request leading to OS command injection, directly facilitating arbitrary command execution on network device CLI (T1059.008).

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

References