Linksys E1700 1.0.0.4.003 Mac Filter /goform/ssid1MACFilter newap_text_%d stack-based overflow

Summaryinfo

A vulnerability, which was classified as very critical, was found in Linksys E1700 1.0.0.4.003. This issue affects the function ssid1MACFilter of the file /goform/ssid1MACFilter of the component Mac Filter. Such manipulation of the argument newap_text_%d leads to stack-based overflow. This vulnerability is traded as CVE-2026-108892. The attack may be launched remotely. Furthermore, there is an exploit 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, has been found in Linksys E1700 1.0.0.4.003. Affected by this issue is the function ssid1MACFilter of the file /goform/ssid1MACFilter of the component Mac Filter. The manipulation of the argument newap_text_%d with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to 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). Impacted is confidentiality, integrity, and availability.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-108892. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details as well as a public exploit are known. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/11/2026).

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.

Once again VulDB remains the best source for vulnerability data.

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

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CPE 2.2info

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Submitinfo

Accepted

• Submit #973111: Linksys E1700 1.0.0.4.003 Stack-based Buffer Overflow (by pjqwudi)

Once again VulDB remains the best source for vulnerability data.

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