Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/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:L/VI:L/VA:L/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
3DescriptionCVE.org
A vulnerability was found in TRENDnet TEW-432BRP 3.10B20. Affected is the function formWPS of the file /goform/formWPS. The manipulation of the argument peerPin results in command injection. The attack can be executed remotely. The exploit has been made public and could 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
Command injection in TRENDnet TEW-432BRP firmware 3.10B20 allows a low-privileged, network-based attacker to execute arbitrary OS commands on the device by manipulating the peerPin argument submitted to the formWPS CGI handler at /goform/formWPS. A public proof-of-concept exploit is available on GitHub, confirmed by the E:P modifier in the CVSS 4.0 vector. No patch has been or will ever be released - the vendor explicitly confirmed this router reached end-of-life in 2009, making permanent device replacement the only viable remediation.
Technical ContextAI
The TEW-432BRP is a legacy SOHO router whose embedded web server exposes a CGI endpoint, /goform/formWPS, that handles Wi-Fi Protected Setup (WPS) PIN configuration. CWE-77 (Improper Neutralization of Special Elements used in a Command) indicates that the peerPin parameter - a WPS PIN value provided by the user - is concatenated into a shell command without sanitization, allowing an attacker to break out of the intended command context and inject arbitrary shell metacharacters. The affected CPE cpe:2.3:a:trendnet:tew-432brp:*:*:*:*:*:*:*:* covers all tracked versions. The CVSS 4.0 E:P modifier in the vector independently corroborates the existence of functional public exploit code.
RemediationAI
No vendor-released patch exists and none will be issued - TRENDnet explicitly stated the product has been EOL since 2009. The primary and only sustainable remediation is to replace the TEW-432BRP with a currently supported router model. If immediate replacement is not feasible, restrict all access to the router's web administration interface by placing it on an isolated management VLAN and blocking remote access from untrusted hosts at the network perimeter - this directly targets the PR:L authentication prerequisite by preventing unauthorized users from reaching the login interface in the first place. Additionally, disable WPS on the device if the firmware UI allows it, which removes the specific vulnerable handler from the attack surface, though this may not be possible on all firmware builds. Note that neither workaround addresses the underlying code defect, and both should be treated as temporary measures only. VulDB submission: https://vuldb.com/submit/814757.
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Same weakness CWE-77 – Command Injection
View allSame technique Command Injection
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-33316
GHSA-x5x3-v9hr-2jhp