How severe is CVE-2026-26793?

CVE-2026-26793 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-26793 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-26793?

CVE-2026-26793 affects Gl-inet Ar300m16 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-26793?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-26793 have an EU (EUVD) identifier?

Yes. CVE-2026-26793 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11659.

When was CVE-2026-26793 published?

CVE-2026-26793 was published on 2026-03-12 and last updated on 2026-06-17.

CVE-2026-26793

CVE-2026-26793 is a critical-severity vulnerability in Gl-inet Ar300m16 Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-77.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-11659
Weakness: CWE-77
Affected product: Gl-inet Ar300m16 Firmware
Published: 2026-03-12
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2026-26793?: 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.
How severe is CVE-2026-26793?: CVE-2026-26793 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-26793 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-26793?: CVE-2026-26793 affects Gl-inet Ar300m16 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-26793?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-26793 have an EU (EUVD) identifier?: Yes. CVE-2026-26793 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11659.
When was CVE-2026-26793 published?: CVE-2026-26793 was published on 2026-03-12 and last updated on 2026-06-17.

References

https://github.com/sezangel/IOT-vul/tree/main/GL-iNet/GL-AR300M16/set_config

Affected products (1)

cpe:2.3:o:gl-inet:ar300m16_firmware:4.3.11:*:*:*:*:*:*:*

More vulnerabilities in Gl-inet Ar300m16 Firmware

CVE-2026-26795 — Critical (CVSS 9.8): GL-iNet GL-AR300M16 v4.3.11 was discovered to contain a command injection vulnerability via the module parameter in the…
CVE-2026-26792 — Critical (CVSS 9.8): GL-iNet GL-AR300M16 v4.3.11 was discovered to contain multiple command injection vulnerabilities in the set_upgrade…
CVE-2026-26791 — Critical (CVSS 9.8): GL-iNet GL-AR300M16 v4.3.11 was discovered to contain a command injection vulnerability via the string port parameter…
CVE-2024-39227 — Critical (CVSS 9.8): GL-iNet products AR750/AR750S/AR300M/AR300M16/MT300N-V2/B1300/MT1300/SFT1200/X750 v4.3.11,…
CVE-2024-39228 — Critical (CVSS 9.8): GL-iNet products AR750/AR750S/AR300M/AR300M16/MT300N-V2/B1300/MT1300/SFT1200/X750 v4.3.11,…
CVE-2024-39226 — Critical (CVSS 9.8): GL-iNet products AR750/AR750S/AR300M/AR300M16/MT300N-V2/B1300/MT1300/SFT1200/X750 v4.3.11,…

All CVEs affecting Gl-inet Ar300m16 Firmware →

Other CWE-77 (Command Injection) vulnerabilities

CVE-2025-70518 — Critical (CVSS 10.0): The management portal's diagnostic ping tool of Fanvil x7a firmware version 2.6.0.1182 does not handle user supplied…
CVE-2026-105484 — Critical (CVSS 10.0): A security vulnerability has been detected in TOTOLINK X6000R 9.4.0cu.652_B20230116. The impacted element is the…
CVE-2026-105134 — Critical (CVSS 10.0): A flaw has been found in Ahsay AhsayCBS up to 10.3.2. This vulnerability affects unknown code of the file…
CVE-2026-102240 — Critical (CVSS 10.0): A vulnerability was found in Netcore NAP930 0.1.241010.141410. This affects the function eval of the file…
CVE-2026-101076 — Critical (CVSS 10.0): A vulnerability was detected in Netcore NR289-GE 1.4.5102. This affects the function system of the file…
CVE-2026-101075 — Critical (CVSS 10.0): A security vulnerability has been detected in Netcore NR289-GE 1.4.5102. The impacted element is the function system of…

Browse all CWE-77 (Command Injection) vulnerabilities →