Vulnerability · Published May 25, 2026 · Assigned by VulDB

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

High 8.8

In plain English

A high-severity stack buffer overflow in EW-7438RPn from Edimax. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 39% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.4%top 61.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
Edimax	EW-7438RPn	1.31

Weakness: CWE-121, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

References

VDB-365407 | Edimax EW-7438RPn formHwSet stack-based overflow vdb-entry, technical-description
VDB-365407 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #813894 | Edimax EW-7438RPn 1.31 Stack-based Buffer Overflow third-party-advisory
https://github.com/wudipjq/my_vuln/blob/main/Edimax/vuln_10/10.md exploit