Which versions of TRENDnet TEW-432BRP are affected by EUVD-2026-33477?

The TRENDnet TEW-432BRP wireless router is vulnerable to a high-severity remote attack with publicly available exploit code and no vendor patch forthcoming due to end-of-life status since 2009;…

Is there a public PoC exploit available for EUVD-2026-33477?

Yes, a public proof-of-concept exploit is available for EUVD-2026-33477. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate EUVD-2026-33477?

24 hours: Inventory all TRENDnet TEW-432BRP 3.10B20 routers in production. 7 days: Disable remote management access, implement firewall rules restricting web interface access to local network only, and initiate replacement procurement with current-generation routers. 30 days: Complete decommissioning and replacement of all TRENDnet TEW-432BRP 3.10B20 units. Note: No vendor-released patch identified at time of analysis.

TRENDnet TEW-432BRP EUVD-2026-33477

Q: What is the CVSS score of EUVD-2026-33477?

EUVD-2026-33477 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%.

| CVE-2026-10158 HIGH

Stack-based Buffer Overflow (CWE-121)

2026-05-31 VulDB

GHSA-cmfx-vxp8-w2v6

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 31, 2026 - 02:29 vuln.today

v3 (cvss_changed)

Analysis Updated

May 31, 2026 - 02:28 vuln.today

v2 (cvss_changed)

Re-analysis Queued

May 31, 2026 - 02:22 vuln.today

cvss_changed

CVSS changed

May 31, 2026 - 02:22 NVD

8.8 (HIGH) 7.4 (HIGH)

Analysis Generated

May 31, 2026 - 01:41 vuln.today

DescriptionCVE.org

A security flaw has been discovered in TRENDnet TEW-432BRP 3.10B20. Affected is the function formPortFw of the file /goform/formPortFw. The manipulation of the argument server_name results in stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks. 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 the TRENDnet TEW-432BRP 3.10B20 wireless router's web interface allows authenticated remote attackers to corrupt memory by sending a crafted server_name parameter to the formPortFw handler at /goform/formPortFw, potentially achieving arbitrary code execution on the device. Publicly available exploit code exists, and the vendor has explicitly refused to issue a fix because the product has been end-of-life since 2009.

Technical ContextAI

The TEW-432BRP is a legacy SOHO wireless router whose embedded web administration interface exposes /goform/* CGI-style endpoints typically implemented in the device's HTTP daemon (commonly boa or a similar lightweight server on MIPS firmware of this vintage). The flaw is a classic CWE-121 stack-based buffer overflow: the formPortFw function copies the attacker-controlled server_name argument into a fixed-size stack buffer without bounds checking, overwriting the saved return address and adjacent stack data. On unprotected embedded MIPS/ARM firmware of this era, NX, ASLR, and stack canaries are typically absent, making reliable control-flow hijacking and shellcode execution practical. The affected CPE is cpe:2.3:a:trendnet:tew-432brp:*:*:*:*:*:*:*:* covering all firmware revisions.

RemediationAI

No vendor-released patch identified at time of analysis - TRENDnet has publicly declined to fix the issue because the device has been EOL since 2009, so the only durable remediation is to decommission and replace the TEW-432BRP with a currently supported router. Until replacement, restrict access to the web management interface by disabling remote/WAN administration entirely, binding admin access to a single trusted management VLAN or host, and placing the router behind an upstream firewall that blocks inbound HTTP/HTTPS to the device; these controls reduce attack surface but do not protect against an attacker already on the LAN (a common scenario for SOHO routers). Additionally, change the default admin credentials to a strong unique password to raise the bar against the PR:L authentication requirement, and disable the Port Forwarding configuration page if the device permits it (this will prevent legitimate use of port forwarding as a trade-off). Monitor the VulDB entry at https://vuldb.com/vuln/367411 for any community firmware or third-party advisory updates.