Linksys E1700 up to 1.0.0.4.003 /goform/setVlan vlan_set stack-based overflow

Summaryinfo

A vulnerability has been found in Linksys E1700 up to 1.0.0.4.003 and classified as very critical. Impacted is the function setVlan of the file /goform/setVlan. Performing a manipulation of the argument vlan_set results in stack-based overflow. This vulnerability is known as CVE-2026-108893. Remote exploitation of the attack is possible. Furthermore, an exploit is available. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability, which was classified as very critical, was found in Linksys E1700 up to 1.0.0.4.003. This affects the function setVlan of the file /goform/setVlan. The manipulation of the argument vlan_set with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on confidentiality, integrity, and availability.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-108893. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details and a public exploit are known. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/11/2026).

The exploit is shared for download 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.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Router Operating System

Vendor

• Linksys

Name

• E1700

Version

• 1.0.0.4.003

License

• commercial

Website

• Vendor: https://www.linksys.com/

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Submitinfo

Accepted

• Submit #973112: Linksys E1700 1.0.0.4.003 Stack-based Buffer Overflow (by pjqwudi)

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion