Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessObtain low-privilege router web credentials
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DeliverySend crafted HTTP POST to /goform/formSetRoute
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ExploitInject shell metacharacters in ip/mask/gateway field
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ExecutionFirmware passes unsanitized input to OS command
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ImpactExecute arbitrary commands on router
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Command injection prevention
MITRE ATT&CK
1 technique across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | Exploitation requires the attacker to hold low-privilege authenticated access to the router's web management interface - the CVSS 4.0 vector specifies PR:L (low privileges required), confirming that unauthenticated exploitation is NOT supported by available data. The vulnerable endpoint /goform/formSetRoute must be network-reachable from the attacker's position (AV:N). No user interaction is required once credentials are obtained (UI:N), and attack complexity is low (AC:L) with no timing dependency (AT:N). The exploitation window is limited by two concrete factors: first, the attacker must first acquire valid router credentials (even low-privilege ones such as a guest or read-only account); second, the attack is scoped exclusively to devices still running TRENDnet TEW-432BRP hardware with firmware 3.10B20 - a 15-year EOL product with a diminishing deployment footprint. |
| Impact | Real-world risk is moderate-to-elevated for any environment where this EOL device remains deployed, despite the anomalously low CVSS 4.0 score of 2.1. The low numerical score is primarily driven by the low vulnerable-system impact metrics (VC:L/VI:L/VA:L) and the PR:L (low privileges) requirement, but command injection on router firmware typically confers full device control - the impact classification should be independently verified against the published PoC, as it may underestimate practical severity. The CVSS 4.0 vector components (AV:N/AC:L/AT:N/PR:L/UI:N) alongside the exploit maturity modifier E:P collectively confirm network reachability, low attack complexity, no required user interaction, and the existence of public proof-of-concept code - a combination that meaningfully lowers the exploitation barrier. No EPSS data was provided in source intelligence, and the CVE is not listed in CISA KEV, indicating no confirmed mass exploitation at time of analysis. However, the no-fix status confirmed by the vendor transforms what might otherwise be a patchable medium-severity issue into a permanent architectural risk for any organization still running this hardware. |
| Exploit ScenarioDerived | An attacker who has obtained low-privilege credentials to the router's web management interface sends a crafted HTTP POST request to /goform/formSetRoute, embedding shell metacharacters (e.g., semicolons, backticks, or pipe characters) within the ip, mask, or gateway parameter values. The firmware's formSetRoute handler passes the unsanitized parameter directly into an OS command - such as a route configuration utility - executing attacker-controlled shell instructions with the firmware process's privilege level. A public proof-of-concept demonstrating this exact technique is available at https://github.com/wudipjq/my_vuln/blob/main/TRENDnet/vuln_1/1.md. |
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Alert meAnalysisAIv1 – May 29, 2026
Command injection in TRENDnet TEW-432BRP firmware 3.10B20 allows network-reachable authenticated attackers to execute arbitrary OS commands by injecting shell metacharacters into the ip, mask, or gateway parameters of the formSetRoute CGI handler at /goform/formSetRoute. A public proof-of-concept exploit has been disclosed on GitHub. No patch will ever be released - TRENDnet has explicitly confirmed the device reached end-of-life in 2009 and is unable to replicate or remediate the vulnerability, making permanent residual risk the defining characteristic of this CVE.
RemediationAI
No vendor-released patch exists and none will ever be provided - TRENDnet has explicitly confirmed this product has been end-of-life since 2009 and cannot issue a fix. The primary and only durable remediation is device replacement with a currently supported router model. As immediate compensating controls pending replacement: restrict access to the router's web management interface (typically TCP 80/443) using upstream firewall rules to limit reachability to trusted management hosts only, which reduces exposure but does not eliminate risk for internally-positioned attackers who already hold low-privilege credentials. Disabling any remote management or WAN-side web interface features reduces the network-accessible attack surface. Rotating or hardening router credentials limits the PR:L exploitation prerequisite. All compensating controls are inherently temporary mitigations and do not substitute for retiring this hardware.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in euvd
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
The TRENDnet TEW-432BRP is a consumer wireless router with firmware 3.10B20, identified by CPE cpe:2.3:a:trendnet:tew-432brp:*:*:*:*:*:*:*:*. The vulnerable code path is the formSetRoute CGI handler at /goform/formSetRoute, a form-processing routine common to embedded router firmware that handles IPv4 routing table configuration. CWE-77 (Improper Neutralization of Special Elements used in a Command) identifies the root cause: user-supplied values for ip, mask, and gateway parameters are passed unsanitized into a downstream shell invocation - likely a system() or popen() call - without stripping or escaping shell metacharacters. This pattern is endemic to legacy embedded firmware built without modern input validation libraries, and is particularly dangerous in routing configuration handlers that inherently interact with OS-level networking commands.
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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
Primary rating from Vendor (VulDB) · only source for this CVE.
CVSS VectorVendor: VulDB
Lifecycle Timeline
2DescriptionCVE.org
A vulnerability has been found in TRENDnet TEW-432BRP 3.10B20. This impacts the function formSetRoute of the file /goform/formSetRoute. The manipulation of the argument ip/mask/gateway leads to command injection. Remote exploitation of the attack is possible. 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.
Threat Intelligence Overview
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
OS command injection occurs when an application passes unsanitized user input directly into system shell commands.
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EUVD-2026-33312
GHSA-gp64-q6gp-h6g8
NVD
CVE.org
EPSS
Vulnrichment
VulDB
Exploit-DB