CVE-2026-26791

CRITICAL
2026-03-12 [email protected]
9.8
CVSS 3.1
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CVSS Vector

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

2
Analysis Generated
Mar 12, 2026 - 19:57 vuln.today
CVE Published
Mar 12, 2026 - 18:16 nvd
CRITICAL 9.8

Tags

Command Injection Ar300m16 Firmware

Description

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

Analysis

GL-iNet GL-AR300M16 router (v4.3.11) is vulnerable to command injection through the string port parameter in the enable_echo_server function. Unauthenticated attackers can execute arbitrary commands on the router.

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Remediation

Within 24 hours: Identify all GL-AR300M16 v4.3.11 devices in your network and isolate them from production environments if possible; disable the echo_server feature if not operationally critical. Within 7 days: Implement network segmentation to restrict access to affected devices, enable logging on all access attempts, and contact GL-iNet for patch availability timeline. …

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Priority Score

49
Low Medium High Critical
KEV: 0
EPSS: +0.2
CVSS: +49
POC: 0

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CVE-2026-26791 vulnerability details – vuln.today
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