CVE-2026-108804

TRENDnet TEW-751DR/TEW-752DRU/TEW733GR Web Management Backend pigwidgeon.cgi fwrite os command injection

CVSS score

10.0

EPSS probability

—

Risk score

1.0

Published

8 h ago

Overview Public Exploits (0)Newsroom Vulnerability Timeline

Patch status has not yet been verified

Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.

Impact on My Inventory

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Vulnerability description

CVE AI research

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DayBreach AI Explanation

Verified against sources

TRENDnet Routers OS Command Injection Vulnerability

Sources read

Source agreement

0/2

Evidence confidence

%55

Short explanation

An OS command injection vulnerability was discovered in the Web Management Backend component of TRENDnet TEW-751DR, TEW-752DRU, and TEW733GR routers. The issue affects the fwrite function within pigwidgeon.cgi and can be exploited remotely.

Why does it matter?

The vulnerability presents severe risks due to its critical severity score and publicly available exploit code. The fact that the affected products are no longer supported by the vendor increases security exposure.

What should be done?

Follow vendor advisories
Isolate or decommission end-of-life devices
Tighten network access controls

Note on uncertainty

1 alanda kaynak uyuşmazlığı var. DayBreach bu değerleri saklamadı; kaynak karşılaştırması aşağıda gösteriliyor.

Chain of evidence and sources2 verified claims

TRENDnet TEW-751DR, TEW-752DRU ve TEW733GR modellerinde pigwidgeon.cgi bileşenini etkileyen bir komut enjeksiyonu açığı bulunmaktadır.

S0 · daybreach-canonical S1 · cvelist S2 · nvd

Üretici, söz konusu yönlendiricilerin 2011 yılında ömrünü tamamladığını (EOL) ve test imkanının bulunmadığını doğrulamıştır.

S0 · daybreach-canonical S1 · cvelist

Show the technical text from the sources

A vulnerability was detected in TRENDnet TEW-751DR, TEW-752DRU and TEW733GR 1.03B01/1.03B03. Affected is the function fwrite of the file pigwidgeon.cgi of the component Web Management Backend. The manipulation of the argument service results in os command injection. It is possible to launch the attack remotely. The exploit is now public and may 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:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P

CWE: CWE-78, CWE-77

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-2026-108804 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

ID	VENDOR	PRODUCT	ACTION
1	trendnet	TEW-751DR	View
2	trendnet	TEW-752DRU	View
3	trendnet	tew733gr	View

Total affected vendors: 1|Products: 3

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
10.0	CVSS V4_0	CRITICAL	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P	CVE CNA
10.0	CVSS V3_1	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R	CVE CNA
10.0	CVSS V3_0	CRITICAL	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R	CVE CNA
10.0	CVSS V2_0	—	AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR	CVE CNA
10.0	CVSS V2	—	AV:N/AC:L/Au:N/C:C/I:C/A:C	NVD
10.0	CVSS V31	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H	NVD
9.3	CVSS V40	CRITICAL	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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-2026-108804 is associated with the following CWEs:

CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')CWE-77: Common Weakness Enumeration Entry CWE-77

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-2026-108804 weaknesses.

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

Attack Vector and Accessibility

ExposureAğ üzerinden

PermissionsGerekmiyor

UserGerekmiyor

Official Sources and Advisories

VDB-416581 | TRENDnet TEW-751DR/TEW-752DRU/TEW733GR Web Management Backend pigwidgeon.cgi fwrite os command injectionvendor-advisory VDB-416581 | CTI Indicators (IOB, IOC, TTP, IOA)vendor-advisory CVE-2026-108804 | CVE Analysis and Reportvendor-advisory Submit #962770 | TRENDnet TEW-751DR, TEW-752DRU, TEW733GR TEW-751DR v1.03B03, TEW-752DRU v1.03B01, TEW733GR v1.03B01 OS Command Injectionvendor-advisory https://github.com/dacj4n/TRENDNetExploitsvendor-advisory https://github.com/dacj4n/TRENDNetExploits/tree/main/exploitvendor-advisory

CVSS Vector Radar Chart

10.0 / 10

Vulnerability Scoring Details

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

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone required

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-78 CWE-77

Similar Vulnerabilities

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