CVE-2026-10123Public exploitNetwork attack vector

Router crash via unchecked domain-filter parameter copy

Published May 30, 2026 · Updated May 30, 2026

Stack-based buffer overflow in TRENDnet TEW-432BRP 3.10B20 allows remote authenticated users to crash the router via a crafted request. The boa formSetDomainFilter handler copies oversized domain-filter parameters into a stack local variable without validating their length, overwriting the function return address. Authenticated web access is required; the published proof of concept demonstrates persistent service interruption, while arbitrary code execution is claimed but not demonstrated.

CVSS severity8.8
High
EPSS probability0.47%
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 TRENDnet TEW-432BRP 3.10B20 allows remote authenticated users to crash the router via a crafted request. The boa formSetDomainFilter handler copies oversized domain-filter parameters into a stack local variable without validating their length, overwriting the function return address. Authenticated web access is required; the published proof of concept demonstrates persistent service interruption, while arbitrary code execution is claimed but not demonstrated.

The record

CVE
CVE-2026-10123
Published
May 30, 2026
Updated
May 30, 2026
Vendor
TRENDnet
Product
TEW-432BRP
Classifications
CWE-121, CWE-119, T1499.004
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

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.

  1. Affected versionversion=3.10B20

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

TRENDnet · TEW-432BRPversion=3.10B20

Published CVSS scores

8.8VulDB CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.4VulDB CNACVSS: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
9.0VulDB CNAAV: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1499.004Application or System Exploitation

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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