EUVD-2026-33462
GHSA-mm7q-pjr7-mv58
Severity by source
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 NVD · only source for this CVE.
CVSS VectorNVD
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
Lifecycle Timeline
5DescriptionCVE.org
A vulnerability was detected in TRENDnet TEW-432BRP 3.10B20. The affected element is the function formSetFirewallRule of the file /goform/formSetFirewallRule. The manipulation of the argument firewall_name results in stack-based buffer overflow. The attack can be executed remotely. The exploit is now 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 the TRENDnet TEW-432BRP wireless router (firmware 3.10B20) allows remote authenticated attackers to corrupt memory by manipulating the firewall_name parameter sent to /goform/formSetFirewallRule, potentially leading to arbitrary code execution on the device. Publicly available exploit code exists for this issue, and because the product has been end-of-life since 2009 the vendor has explicitly refused to release a fix, leaving any still-deployed devices permanently vulnerable.
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires network reachability to the router's HTTP administration interface and valid low-privilege credentials to the web UI (CVSS PR:L) in order to reach the /goform/formSetFirewallRule handler; the attacker then supplies an oversized value in the firewall_name POST parameter to trigger the stack overflow. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Signals are mixed but lean toward genuine operational risk for any organization still running this hardware. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who can reach the router's web interface (either across the internet if remote admin is enabled, or from the LAN/WLAN after associating with the network) authenticates with valid or default credentials and submits a crafted POST to /goform/formSetFirewallRule containing an oversized firewall_name value. The overflow corrupts the stack and, using the published PoC as a template, the attacker gains arbitrary code execution as the web-server process (typically root on these embedded devices), enabling persistent backdoor installation, DNS hijacking, or pivoting onto the internal network. |
| Remediation | No vendor-released patch identified at time of analysis - TRENDnet has publicly declined to fix this device due to its 2009 EOL status, so the only durable remediation is to decommission the TEW-432BRP and replace it with a currently-supported router. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Execute a complete asset inventory to identify all TRENDnet TEW-432BRP devices on the network, including remote and legacy installations. …
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External POC / Exploit Code
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