EUVD-2026-60444
GHSA-fwcw-w75j-995j
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Remote unauthenticated HTTP-reachable command injection yields code execution as the device user, so AV:N/AC:L/PR:N/UI:N with full C/I/A impact; scope unchanged within the device.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
4DescriptionCVE.org
An issue in Tneda W20E v.16.01.0.6(2782) allows a remote attacker to execute arbitrary code via the url_need_login function
AnalysisAI
OS command injection in the Tenda W20E router firmware version 16.01.0.6(2782) allows remote attackers to execute arbitrary code by abusing the url_need_login function, which fails to sanitize attacker-controlled input before passing it to a system shell (CWE-78). The flaw carries a CVSS 9.8 (AV:N/AC:L/PR:N/UI:N) rating, meaning unauthenticated network-based exploitation with full compromise of the device. Publicly available exploit code exists via a GitHub disclosure repository, though EPSS remains low (0.21%) and it is not listed in CISA KEV.
Technical ContextAI
The Tenda W20E is a SOHO/enterprise-grade wireless router; the vulnerability resides in its embedded HTTP management interface, specifically the url_need_login function that is invoked during request authorization/routing. CWE-78 (Improper Neutralization of Special Elements used in an OS Command) indicates that attacker-supplied data reaching this function is concatenated into a shell command (e.g., via system()/popen() calls common in Tenda's httpd/goahead-style binaries) without escaping metacharacters, allowing command breakout. The tags 'RCE' and 'Command Injection' corroborate a classic embedded-router injection primitive. CPE data is unhelpful here (cpe:2.3:a:n/a:n/a:*), so exact affected product identification rests on the description string rather than a normalized NVD CPE.
RemediationAI
No vendor-released patch identified at time of analysis - Tenda has not published a fixed firmware version in the available data, so no exact upgrade target can be cited. As compensating controls, disable remote/WAN-side access to the router's web management interface so the httpd endpoint is unreachable from the internet, and restrict LAN management access to a trusted admin VLAN or specific host addresses to blunt the AV:N reachability. Where feasible, place the device behind a firewall that blocks inbound access to the management HTTP(S) port, and monitor for anomalous outbound connections indicative of post-exploitation. These controls reduce exposure but do not remediate the underlying injection; the trade-off is loss of convenient remote administration. Consult the disclosure at https://github.com/H0111mes/Tenda-W20E-Vulnerability-Disclosure and VulDB entry https://vuldb.com/vuln/391435 for indicators, and replace the device if no patched firmware becomes available.
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Same weakness CWE-78 – OS Command Injection
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External POC / Exploit Code
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