CVE-2026-9459
CWE-119Published: May 25, 2026· Updated: May 26, 2026
Official Description
A security flaw has been discovered in Edimax EW-7438RPn 1.31. This affects the function formConnectionSetting of the file /goform/formConnectionSetting. Performing a manipulation of the argument max_Conn/timeOut results in stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Technical Analysis
CVE-2026-9459 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.
From a weakness classification perspective (CWE-119): Buffer overflow vulnerabilities can lead to arbitrary code execution or denial of service by corrupting adjacent memory.
CVSS v3.1 Vector Breakdown
Exploit & PoC Resources
All References (4)
Quick Facts
Related CVEs (CWE-119)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-9459 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts