CVE-2026-7684Public exploitNetwork attack vector

Authenticated code execution via WAN gateway overflow

Published May 3, 2026 · Updated May 3, 2026

Stack-based buffer overflow in Edimax BR-6428nC 1.0 through 1.16 allows remote authenticated users to corrupt process memory. /goform/setWAN processes the pptpDfGateway request-body value without enforcing bounds before copying it into a stack buffer. Low-privileged access to the network management interface is required; successful exploitation takes control of the affected process or crashes it.

CVSS severity8.8

High

EPSS probability0.48%

Next 30 days · Sep 16, 2026

Known exploitationUnconfirmed

Based on sourced intelligence

Hinoki checkNot available

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Summary

What happened

The record

CVE: CVE-2026-7684
Published: May 3, 2026
Updated: May 3, 2026

Vendor: Edimax Technology Co., Ltd.
Product: BR-6428nC
Classifications: CWE-119, CWE-120, T1190

Attack vector: network
Privileges: authenticated

Timeline

How it unfolded

May 3, 2026CVE publishedPublication date reported by the CVE source.
May 3, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

Affected versionversion=1.0
Affected versionversion=1.1
Affected versionversion=1.10
Affected versionversion=1.11
Affected versionversion=1.12
Affected versionversion=1.13
Affected versionversion=1.14
Affected versionversion=1.15
Affected versionversion=1.16
Affected versionversion=1.2
Affected versionversion=1.3
Affected versionversion=1.4
Affected versionversion=1.5
Affected versionversion=1.6
Affected versionversion=1.7
Affected versionversion=1.8
Affected versionversion=1.9

What conditions does exploitation require?

Attack vectornetwork

Required privilegesauthenticated

What is affected?

Edimax Technology Co., Ltd. · BR-6428nCversion=1.0; version=1.1; version=1.10; version=1.11; version=1.12; version=1.13; version=1.14; version=1.15; version=1.16; version=1.2; version=1.3; version=1.4; version=1.5; version=1.6; version=1.7; version=1.8; version=1.9

Published CVSS scores

9.0VulDBAV:N/AC:L/Au:S/C:C/I:C/A:C

8.8VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

7.4VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026

Latest reporting daySep 15, 2026

Latest daily unique IPsUnavailable

Prior 30-day averageUnavailable

SourceShadowserver honeypots (KEV)

Vectornetwork

Privilegesauthenticated

Known exploitationUnconfirmed

Public exploitPublished

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

T1190Exploit Public-Facing Application

Public exploit references

Edimax BR-6428nC setWAN pptpDfGateway stack-overflow proof of conceptproof of concept · unverified

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

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