CVE-2026-109157

TRENDnet TEW-432BRP formTcpipSetup stack-based overflow

CVSS score

9.4

EPSS probability

—

Risk score

0.9

Published

9 h ago

Overview Public Exploits (0)Newsroom Vulnerability Timeline

Patch status has not yet been verified

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Impact on My Inventory

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Vulnerability description

CVE AI research

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DayBreach AI Explanation

Verified against sources

TRENDnet TEW-432BRP formTcpipSetup Stack-Based Overflow Vulnerability

Sources read

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

A vulnerability exists in TRENDnet TEW-432BRP 3.10B20 affecting the formTcpipSetup function, leading to a stack-based buffer overflow. A public exploit is available.

Why does it matter?

This critical vulnerability allows remote attacks to be initiated, and the affected products are no longer supported by the maintainer.

What should be done?

Follow vendor advisory recommendations

Chain of evidence and sources2 verified claims

TRENDnet TEW-432BRP 3.10B20 sürümünde formTcpipSetup fonksiyonunu etkileyen yığını tabanlı tampon taşması açığı bulunmaktadır.

S0 · daybreach-canonical S1 · cvelist

İstismar kamuya açık hale getirilmiştir ve saldırı uzaktan başlatılabilir.

S0 · daybreach-canonical S1 · cvelist

Show the technical text from the sources

A vulnerability was found in TRENDnet TEW-432BRP 3.10B20. Affected by this vulnerability is the function formTcpipSetup of the file /goform/formTcpipSetup. Performing a manipulation of the argument Name results in stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been made public and could be used. The vendor confirms: "As this router was EOL'd in 2011, we have no way of testing if such vulnerability exists. We will notify our customers of a potential vulnerability on this product." This vulnerability only affects products that are no longer supported by the maintainer.

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

CWE: CWE-121, CWE-119

Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-109157 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

ID	VENDOR	PRODUCT	ACTION
1	trendnet	tew-432brp	View

Total affected vendors: 1|Products: 1

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCORE	VERSION	SEVERITY	VECTOR	SOURCE
9.9	CVSS V3_1	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R	CVE CNA
9.9	CVSS V3_0	CRITICAL	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R	CVE CNA
9.9	CVSS V31	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H	NVD
9.4	CVSS V4_0	CRITICAL	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P	CVE CNA
9.0	CVSS V2_0	—	AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR	CVE CNA
9.0	CVSS V2	—	AV:N/AC:L/Au:S/C:C/I:C/A:C	NVD
8.6	CVSS V40	HIGH	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X	NVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.

Restrict access to internet-facing services and apply network segmentation.

Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.

Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-109157 is associated with the following CWEs:

CWE-121: Common Weakness Enumeration Entry CWE-121 CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-109157 weaknesses.

CAPEC-66: SQL Injection CAPEC-126: Path Traversal CAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden

PermissionsLow

UserGerekmiyor

Official Sources and Advisories

VDB-416890 | TRENDnet TEW-432BRP formTcpipSetup stack-based overflowvendor-advisory VDB-416890 | CTI Indicators (IOB, IOC, IOA)vendor-advisory CVE-2026-109157 | CVE Analysis and Reportvendor-advisory Submit #979590 | TRENDnet TEW-432BRP 3.10B20 Stack-based Buffer Overflowvendor-advisory https://github.com/wudipjq/my_vuln/blob/main/TRENDnet/vuln_21/21.mdvendor-advisory

CVSS Vector Radar Chart

9.4 / 10

Vulnerability Scoring Details

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

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow privileges

User InteractionNone required

Confidentiality (Gizlilik)Low

Integrity (Bütünlük)None

Availability (Erişilebilirlik)High

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Follow the vendor

trendnet

Weakness Type (CWE & CAPEC)

CWE-121 CWE-119

Similar Vulnerabilities

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