CVE-2026-26792 Command injection in n/a

Critical 9.8 Published 12 Mar 2026 Updated 14 Mar 2026

Attackers can execute arbitrary commands on GL-iNet routers via crafted input in the set_upgrade function parameters.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-26792?

CVE-2026-26792 is a critical command injection vulnerability in n/a, published on 12 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

GL-iNet GL-AR300M16 v4.3.11 was discovered to contain multiple command injection vulnerabilities in the set_upgrade function via the modem_url, target_version, current_version, firmware_upload, hash_type, hash_value, and upgrade_type parameters. These vulnerabilities allow attackers to execute arbitrary commands via a crafted input.

Weakness: CWE-77

Which versions are affected by CVE-2026-26792?

It affects 1 product.

Products include Gl-Inet Ar300m16 Firmware.

How do I fix CVE-2026-26792?

No fix has been published for CVE-2026-26792 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2026-26792 being exploited?

There is no known exploitation of CVE-2026-26792 in the wild and no public exploit code.

Sources

Also known as GHSA-x28p-58gf-rh8c.