CVE-2026-9426: Edimax EW-7438RPn formHwSet stack-based overflow

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-25 · updated 2026-07-23
Weakness: CWE-119

Description

A vulnerability was detected in Edimax EW-7438RPn 1.31. This affects the function formHwSet of the file /goform/formHwSet. The manipulation of the argument Anntena/Mcs/regDomain/nic0Addr/nic1Addr/wlanAddr/wanAddr/wlanSSID/wlanChan/initgain/txcck/txofdm/submit-url results in stack-based buffer overflow. The attack can be executed remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

Edimax EW-7438RPn: 1.31

References

https://github.com/wudipjq/my_vuln/blob/main/Edimax/vuln_10/10.md
https://vuldb.com/submit/813894
https://vuldb.com/vuln/365407
https://vuldb.com/vuln/365407/cti

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