CVE-2026-26791 — CRITICAL (9.8)

Vulnerability 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.

CVSS Score

9.8

CRITICAL

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

Affected Products

Vendor	Product	Versions
Gl-Inet	Ar300M16 Firmware	4.3.11
Gl-Inet	Ar300M16	-

Related Weaknesses (CWE)

CWE-77

References

https://github.com/sezangel/IOT-vul/tree/main/GL-iNet/GL-AR300M16/enable_echo_seExploitThird Party Advisory

FAQ

What is CVE-2026-26791?

CVE-2026-26791 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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...

How severe is CVE-2026-26791?

CVE-2026-26791 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-26791?

Check the references section above for vendor advisories and patch information. Affected products include: Gl-Inet Ar300M16 Firmware, Gl-Inet Ar300M16.