What is the CVSS score of CVE-2026-26793?

CVE-2026-26793 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.2%.

Which versions of Ar300m16 Firmware are affected by CVE-2026-26793?

A critical remote code execution vulnerability (CVE-2026-26793) affects GL-iNet GL-AR300M16 routers running v4.3.11, allowing unauthenticated attackers to execute arbitrary commands on affected…

How to fix or mitigate CVE-2026-26793?

Within 24 hours: Identify and inventory all GL-AR300M16 v4.3.11 devices across the organization; isolate affected devices from critical network segments if operationally feasible. Within 7 days: Implement network-level controls (WAF rules, IP whitelisting, segmentation) to restrict access to the set_config function; disable remote administration features if not essential; monitor for suspicious command patterns. Within 30 days: Coordinate with GL-iNet for patched firmware release; plan upgrade/replacement strategy; conduct forensic analysis of affected devices for indicators of compromise.

Ar300m16 Firmware CVE-2026-26793

CRITICAL

Command Injection (CWE-77)

2026-03-12 cve@mitre.org

Command Injection Ar300m16 Firmware

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

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

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 19:57 vuln.today

CVE Published

Mar 12, 2026 - 19:16 nvd

CRITICAL 9.8

DescriptionCVE.org

GL-iNet GL-AR300M16 v4.3.11 was discovered to contain a command injection vulnerability via the set_config function. This vulnerability allows attackers to execute arbitrary commands via a crafted input.

AnalysisAI

GL-iNet GL-AR300M16 v4.3.11 has a command injection in the set_config function, adding to the growing list of injection vulnerabilities in this device. This is the fourth distinct command injection CVE for this router model.

Technical ContextAI

The set_config function fails to sanitize input before passing it to system commands (CWE-77). This CVE joins CVE-2026-26791, CVE-2026-26792, and CVE-2025-70245 as part of a systemic command injection problem across the GL-AR300M16 web interface.

RemediationAI

Firmware update required. Given the number of vulnerabilities, strongly consider replacing this device with a model from a vendor with better security practices.