Linksys E8450 1.2.00.360516 /www/cgi-bin/portal.cgi strcpy hidden_timezone stack-based overflow

Summaryinfo

A vulnerability identified as very critical has been detected in Linksys E8450 1.2.00.360516. Affected by this vulnerability is the function strcpy of the file /www/cgi-bin/portal.cgi. Performing a manipulation of the argument hidden_timezone results in stack-based overflow. This vulnerability is reported as CVE-2026-120283. 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, which was classified as very critical, was found in Linksys E8450 1.2.00.360516. This affects the function strcpy of the file /www/cgi-bin/portal.cgi. The manipulation of the argument hidden_timezone 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.

This vulnerability is uniquely identified as CVE-2026-120283. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a exploit are known. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/01/2026).

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.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Router Operating System

Vendor

• Linksys

Name

• E8450

Version

• 1.2.00.360516

License

• commercial

Website

• Vendor: https://www.linksys.com/

CPE 2.3info

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CPE 2.2info

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Threat Intelligenceinfo

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Entryinfo

Submitinfo

Accepted

• Submit #1014924: Linksys E8450 firmware 1.2.00.360516 Linksys E8450 portal.cgi hidden_timezone stack buffer overflow (by fanchai)

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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