Ar300m16 Firmware
CVE-2026-26795
CRITICAL
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessSend crafted HTTP request to M.get_system_log
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ExploitInject malicious command in module parameter
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ExecutionExecute arbitrary commands as root
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ImpactGain full system control
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Command injection prevention
MITRE ATT&CK
1 technique across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | GL-iNet GL-AR300M16 running firmware v4.3.11 with M.get_system_log function accessible. No authentication required; remote unauthenticated exploitation against default configurations. |
| Impact | CVSS 9.8 (Critical). Same risk profile as CVE-2026-26791 and CVE-2026-26792. The pattern of multiple injection points suggests the router's entire web interface lacks input sanitization. EPSS 0.17%. |
| Exploit ScenarioDerived | An attacker exploits the system log endpoint to inject commands via the module parameter, gaining root shell access to the router. |
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Alert meAnalysisAIv1 – Mar 12, 2026
GL-iNet GL-AR300M16 v4.3.11 contains another command injection vulnerability, this time via the module parameter in the M.get_system_log function. Part of a series of command injection flaws in this router model.
Earlier versions of this analysis (1)
GL-iNet GL-AR300M16 v4.3.11 allows command injection via the module parameter in the system log retrieval function.
RemediationAI
Same as other GL-iNet vulnerabilities: update firmware, restrict management access, consider device replacement.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
The M.get_system_log function passes the module parameter to a shell command without sanitization (CWE-77). This is one of several command injection vulnerabilities in the GL-AR300M16 indicating a systemic lack of input validation across the router's web interface.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionCVE.org
GL-iNet GL-AR300M16 v4.3.11 was discovered to contain a command injection vulnerability via the module parameter in the M.get_system_log function. This vulnerability allows attackers to execute arbitrary commands via a crafted input.
Executive ViewAI
A critical command injection vulnerability (CVE-2026-26795) affecting GL-iNet GL-AR300M16 routers allows unauthenticated attackers to execute arbitrary commands with a 9.8 CVSS score. Organizations using this device model are at immediate risk of complete system compromise, data theft, and network infiltration. No vendor patch is currently available, requiring immediate mitigation actions.
Disable the system log function if operationally feasible; restrict network access to the device management interface via firewall rules and VPN-only access; implement WAF rules to filter requests containing command injection patterns (pipe, semicolon, backtick characters) in the module parameter; enable detailed logging and monitoring of the affected function for suspicious activity; consider replacing affected devices with patched hardware from alternative vendors until a patch is available.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
VulDB
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
OS command injection occurs when an application passes unsanitized user input directly into system shell commands.
Affected Products (CPE)CVE.org
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View all 9More in Ar300m16 Firmware
View allGL-iNet products AR750/AR750S/AR300M/AR300M16/MT300N-V2/B1300/MT1300/SFT1200/X750 v4.3.11, MT3000/MT2500/AXT1800/AX1800/
GL-iNet products AR750/AR750S/AR300M/AR300M16/MT300N-V2/B1300/MT1300/SFT1200/X750 v4.3.11, MT3000/MT2500/AXT1800/AX1800/
GL-iNet products AR750/AR750S/AR300M/AR300M16/MT300N-V2/B1300/MT1300/SFT1200/X750 v4.3.11, MT3000/MT2500/AXT1800/AX1800/
GL-iNet products AR750/AR750S/AR300M/AR300M16/MT300N-V2/B1300/MT1300/SFT1200/X750 v4.3.11, MT3000/MT2500/AXT1800/AX1800/
An issue was discovered on certain GL-iNet devices, including MT6000, MT3000, MT2500, AXT1800, and AX1800 4.6.2. Rated h
An issue was discovered on certain GL-iNet devices, including MT6000, MT3000, MT2500, AXT1800, and AX1800 4.6.2. Rated h
An issue was discovered on certain GL-iNet devices, including MT6000, MT3000, MT2500, AXT1800, and AX1800 4.6.2. Rated h
An issue was discovered on certain GL-iNet devices. Rated high severity (CVSS 7.5), this vulnerability is remotely explo
An issue was discovered on certain GL-iNet devices, including MT6000, MT3000, MT2500, AXT1800, and AX1800 4.6.2. Rated m
GL-iNet GL-AR300M16 v4.3.11 has a command injection in the set_config function, adding to the growing list of injection
GL-iNet GL-AR300M16 v4.3.11 has multiple command injection vulnerabilities in the set_upgrade function through seven dif
GL-iNet GL-AR300M16 router (v4.3.11) is vulnerable to command injection through the string port parameter in the enable_
Exploit-DB