Linksys E1700 1.0.0.4.003 /goform/setDMZ MAC_addr os command injection

Summaryinfo

A vulnerability was found in Linksys E1700 1.0.0.4.003. It has been classified as very critical. The impacted element is the function setDMZ of the file /goform/setDMZ. The manipulation of the argument MAC_addr leads to os command injection. This vulnerability is uniquely identified as CVE-2026-108895. The attack is possible to be carried out remotely. Moreover, an exploit is present. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability was found in Linksys E1700 1.0.0.4.003 and classified as very critical. This issue affects the function setDMZ of the file /goform/setDMZ. The manipulation of the argument MAC_addr with an unknown input leads to a os command injection vulnerability. Using CWE to declare the problem leads to CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-108895. The exploitation is known to be easy. The attack may be initiated remotely. Technical details as well as a public exploit are known. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/11/2026). The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

The exploit is available at github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Router Operating System

Vendor

• Linksys

Name

• E1700

Version

• 1.0.0.4.003

License

• commercial

Website

• Vendor: https://www.linksys.com/

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CPE 2.2info

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Submitinfo

Accepted

• Submit #973114: Linksys E1700 1.0.0.4.003 OS Command Injection (by pjqwudi)

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