CVE-2026-10125Public exploitNetwork attack vector

Authenticated memory corruption via PPPoE username overflow

Published May 30, 2026 · Updated May 30, 2026

Stack-based buffer overflow in Edimax BR-6478AC 1.23 allows remote authenticated users to corrupt memory through PPPoE setup. The formPPPoESetup POST handler accepts a manipulated pppUserName argument that overruns a stack-based buffer. Low-privileged management access is required; exploitation can disrupt the router process, but published sources do not establish code execution.

CVSS severity8.8
High
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Edimax BR-6478AC 1.23 allows remote authenticated users to corrupt memory through PPPoE setup. The formPPPoESetup POST handler accepts a manipulated pppUserName argument that overruns a stack-based buffer. Low-privileged management access is required; exploitation can disrupt the router process, but published sources do not establish code execution.

The record

CVE
CVE-2026-10125
Published
May 30, 2026
Updated
May 30, 2026
Vendor
Edimax Technology Co., Ltd.
Product
BR-6478AC
Classifications
CWE-119, CWE-121, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 30, 2026CVE publishedPublication date reported by the CVE source.
  2. May 30, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=1.23

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Edimax Technology Co., Ltd. · BR-6478ACversion=1.23

Published CVSS scores

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
8.8VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.0VulDBAV:N/AC:L/Au:S/C:C/I:C/A:C

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-121Stack-based Buffer Overflow
T1190Exploit Public-Facing Application

Public exploit references

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

Technologies

Your stack

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Your stack

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