Which versions of TRENDnet TEW-432BRP are affected by CVE-2026-10122?

TRENDnet TEW-432BRP routers running version 3.10B20 contain a remote code execution vulnerability allowing authenticated remote attackers to execute arbitrary code via buffer overflow; publicly…

Is there a public PoC exploit available for CVE-2026-10122?

Yes, a public proof-of-concept exploit is available for CVE-2026-10122. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-10122?

24 hours: Conduct network inventory scan to identify any TEW-432BRP routers still operational. 7 days: Procure replacement routers (current-generation TRENDnet or equivalent) and schedule decommissioning; for any identified units, implement network segmentation as a temporary containment measure. 30 days: Complete replacement of all affected devices or ensure full isolation from management networks and critical infrastructure segments.

TRENDnet TEW-432BRP CVE-2026-10122

Q: What is the CVSS score of CVE-2026-10122?

CVE-2026-10122 has a CVSS 4.0 base score of 7.4 (High). CVSS vector: CVSS: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/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. EPSS exploitation probability: 0.0%.

EUVD-2026-33464 HIGH

Stack-based Buffer Overflow (CWE-121)

2026-05-30 VulDB

GHSA-6r98-67vc-rxpc

Buffer Overflow Stack Overflow Tew 432Brp

7.4

CVSS 4.0 · Vendor: VulDB

Severity by source

Vendor (VulDB) PRIMARY

7.4 HIGH

CVSS: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/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

Primary rating from Vendor (VulDB) · only source for this CVE.

CVSS VectorVendor: VulDB

CVSS: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/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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

Analysis Updated

May 30, 2026 - 16:30 vuln.today

v3 (cvss_changed)

Analysis Updated

May 30, 2026 - 16:30 vuln.today

v2 (cvss_changed)

Re-analysis Queued

May 30, 2026 - 16:22 vuln.today

cvss_changed

CVSS changed

May 30, 2026 - 16:22 NVD

8.8 (HIGH) 7.4 (HIGH)

Analysis Generated

May 30, 2026 - 15:45 vuln.today

DescriptionCVE.org

A vulnerability has been found in TRENDnet TEW-432BRP 3.10B20. This affects the function formSetProtocolFilter of the file /goform/formSetProtocolFilter. Such manipulation of the argument protocol_name leads to stack-based buffer overflow. The attack may be performed from remote. The exploit has been disclosed to the public and may be used. The vendor explains: "This product has been EOL for 15 years (since 2009). As the item has been EOL for such a long time, we are not able to replicate or fix any vulnerabilities." This vulnerability only affects products that are no longer supported by the maintainer.

AnalysisAI

Stack-based buffer overflow in TRENDnet TEW-432BRP 3.10B20 routers allows authenticated remote attackers to corrupt memory and likely execute arbitrary code by sending a crafted protocol_name argument to the formSetProtocolFilter handler at /goform/formSetProtocolFilter. Publicly available exploit code exists on GitHub, and the vendor has confirmed the device has been end-of-life since 2009 and will not receive a fix, leaving deployed units permanently vulnerable.

Technical ContextAI

The vulnerability is a CWE-121 stack-based buffer overflow in the embedded web management interface of the TRENDnet TEW-432BRP wireless router (CPE cpe:2.3:a:trendnet:tew-432brp:*). The /goform/ URI prefix is characteristic of the Boa or similar lightweight CGI-style web server commonly used in consumer SOHO router firmware, where form handlers are implemented as native C functions. The formSetProtocolFilter function copies the user-supplied protocol_name parameter into a fixed-size stack buffer without bounds checking, allowing an oversized value to overwrite the saved return address, frame pointer, and other adjacent stack data - a classic memory corruption pattern in MIPS/ARM-based embedded Linux devices that typically lack modern mitigations such as ASLR, stack canaries, and non-executable stack.

RemediationAI

No vendor-released patch identified at time of analysis - TRENDnet has publicly declined to fix this device because it has been EOL since 2009. The only durable remediation is to decommission and replace the TEW-432BRP with a currently supported router. Until replacement, restrict exposure by ensuring the WAN-side remote management interface is disabled so /goform/formSetProtocolFilter is not reachable from the internet, segment the device onto an isolated management VLAN, change default administrative credentials to limit casual abuse of the PR:L requirement, and place the device behind an upstream firewall that blocks inbound HTTP/HTTPS to the router's management port. Note that these controls do not protect against an attacker who has already obtained valid LAN access or low-privilege credentials. Public exploit code is available at https://github.com/wudipjq/my_vuln/blob/main/TRENDnet/vuln_9/9.md, which defenders can use to validate detection rules on the management URI and the protocol_name parameter.