RouterGuard Scan
A mobile-first router auditor that fingerprints every device on your small-shop or home-office network, checks the make/model/firmware against a live CVE database, and gives a non-technical owner a plain-English action plan when the vendor (like Tenda) won't patch.
Non-technical owners of small shops, cafés and home offices who bought cheap Tenda or similar budget routers and have no IT support
- One-tap LAN scan that identifies router make, model and exposed firmware version
- Plain-English CVE alerts (what this backdoor means in practice, who can exploit it)
- Step-by-step mitigation playbook: disable remote admin, change default creds, isolate IoT, change LAN IP
- Replace-or-keep recommendation tied to a vulnerability age score and vendor response status
CERT/CC just disclosed an unpatchable authentication backdoor (CVE-2026-11405) in a widely sold budget router brand and the vendor is unresponsive — small businesses using these routers now have no one to call but no easy way to even know they're affected.
CERT/CC VU#213560 and CVE-2026-11405 is real and widely reported across The Hacker News, SecurityAffairs, and CyberSecurityNews, affecting five popular Tenda models (FH1201, W15E, AC10, AC5, AC6); however, the stated HN '239 points / 74 comments' engagement couldn't be independently verified, and the target non-technical SMB/café owners are unlikely to self-discover a CVE bulletin.CERT/CC Warns of Hidden Admin Backdoor in Tenda Router Firmware ↗VU#213560 - Tenda firmware (multiple versions) contains hidden authentication backdoor ↗
Network scanner space is crowded — Fing is the dominant mobile-first incumbent with 50+ competitors listed on AlternativeTo, and general IP/network discovery is solved; whitespace exists specifically for router-firmware CVE auditing tied to non-technical remediation, but Fing and others can bolt on similar features quickly.7 Best Network Scanner Apps — Free & Paid Compared (2026) ↗Great Fing Alternatives: Top Network Monitors & IP Scanners in 2026 ↗
SMB vulnerability scanners exist on G2/SoftwareSuggest but reviews/pricing show small-shop and café owners are notoriously reluctant to pay for IT tools; Fing's freemium model sets a low ceiling and the target persona typically only spends on tools after a breach, not prophylactically.Best Vulnerability Scanner Software for Small Business ↗Pricing - Vulnerability Scanning Services & Subscriptions ↗
Individual CVEs are one-time news cycles that drive spikes then fade; router firmware vulnerabilities are an ongoing category (NVD lists thousands for SOHO gear), but a single-purpose tool risks becoming a feature absorbed by Fing/Nmap rather than a standalone product.
Technically straightforward: MAC OUI + HTTP/banner fingerprinting against router web UIs, mapping to a maintained CVE/NVD feed (free APIs), with plain-English remediation templates; no novel ML or hardware required, and a mobile UI wrapper around existing open data is well-trodden ground.Tenda Authentication Backdoor Grants Attackers Full Administrative Access ↗