KVM Ultimate Buyer’s Guide

Updated June 2026

In 2026, the KVM-over-IP landscape has split into two distinct worlds: the Enterprise Titans (Raritan, Aten) and the Open-Source Disruptors (PiKVM, JetKVM, TinyPilot). Hardware availability has stabilised, but the big story of the year is security: a wave of independent audits has confirmed that the cheap end of the market is riddled with fundamental flaws — and that even the well-regarded open-source units are not immune. Choosing the right device, and keeping its firmware current, matters more than ever.

Note: This is an updated article from the popular ‘Which KVM Over IP in 2025’

🚨 2026 Security Alert: Cheap IP-KVMs Are a Network-Wide Risk

In March 2026, firmware-security firm Eclypsium published a study of low-cost IP-KVMs and disclosed nine CVEs across four products: the GL-iNet Comet RM-1, the Angeet/Yeeso ES3, the Sipeed NanoKVM and JetKVM. Their conclusion is worth quoting in spirit: these are not exotic zero-days, they are the same basic failures — missing firmware-signature validation, no brute-force protection, broken access controls and exposed debug interfaces — that plagued early IoT devices a decade ago.

The difference is that a KVM gives an attacker the equivalent of physical, BIOS/UEFI-level access to every machine it controls, and can silently re-infect a host even after you rebuild it.

Here is how the main devices stack up after the 2026 disclosures:

• ⛔ Worst offender — Angeet / Yeeso ES3 (no fix available): This ultra-cheap clone carries CVE-2026-32297 (CVSS 9.8), a missing-authentication flaw allowing arbitrary code execution, and CVE-2026-32298 (CVSS 8.8), an OS command-injection flaw. As of this update, no patch exists. Avoid entirely.
• Sipeed NanoKVM (improving, but still bottom-tier): The ~$25–$100 NanoKVM was the device that kicked off the panic, flagged by SANS Stormcast (December 2025) and given a “Security F” by researchers. Its ultra-cheap price and tiny size made it an inconspicuous tool for North Korean IT workers attempting to covertly access US corporate networks — a scheme that actually prompted the FBI to visit high-profile tech reviewer Jeff Geerling regarding the devices. The flaws are real (insecure firmware updates, weak password handling, command injection) and CVE-2026-32296 was patched in NanoKVM 2.3.1. The legitimate ongoing concerns are the update mechanism, the fact that the device routes DNS through Chinese servers by default, and phones home to Sipeed infrastructure. Still not appropriate for production use.
• GL-iNet Comet RM-1 (partially patched): Carries four CVEs — firmware-authenticity (CVE-2026-32290) and UART root access (CVE-2026-32291) with fixes planned, plus brute-force and provisioning flaws (CVE-2026-32292/32293) already fixed in 1.8.1 BETA. Usable if kept fully patched, but watch the two outstanding items.
• JetKVM (fixed quickly — keep it updated): JetKVM shipped with CVE-2026-32294 (insufficient firmware-update verification) and CVE-2026-32295 (insufficient rate limiting), both fixed in firmware v0.5.4. It remains a strong pick provided you run 0.5.4 or later.
• PiKVM V4 & TinyPilot (cleanest records): Neither carried any new 2026 CVEs of note. Both remain highly recommended when placed behind strong access controls, not on the open internet.
• Aten (enterprise, but patch it): Don’t assume FIPS-grade hardware is bulletproof — Positive Technologies disclosed five flaws in Aten switches in July 2025 (since patched). Keep firmware current.

How to deploy any IP-KVM safely

Because a compromised KVM is a direct, silent channel to everything it controls, the deployment model matters as much as the brand. Recommended hardening:

• Never expose the web panel directly to the internet. Front it with Zero Trust Network Access (ZTNA) — units like PiKVM V4, JetKVM, and TinyPilot support Tailscale or WireGuard natively.
• Enforce multi-factor authentication where the device supports it.
• Isolate KVMs on a dedicated management VLAN with no general internet access.
• Use Shodan (or our Network Protection Tester) to confirm the device isn’t externally exposed.
• Monitor traffic to and from the device for anything unexpected, and watch the controlled host for tell-tale signs such as unexplained mouse movement.
• Keep firmware up to date — most of the 2026 issues are already patched in current releases.

Thermal monitoring is also maturing: as server densities rise, leading enterprise units (Raritan/Aten) now integrate temperature and humidity sensors directly, helping prevent “thermal runaway” in remote racks.

🏆 Top Picks for 2026

1. The Gold Standard: PiKVM V4 Plus

The PiKVM continues to dominate the prosumer and mid-market space.

• Best For: IT Pros, Home Labs and SMBs.
• New for 2026: Fully matured V4 hardware with 4K support (limited fps) and massive improvements to the “Mass Storage” feature, letting you mount ISOs roughly 3× faster than previous versions.
• Security: The cleanest record of any device here — no notable 2026 CVEs. Pair it with WireGuard/Tailscale.
• Price: ~$280 / £220.

2. The High-Speed Challenger: JetKVM

JetKVM remains the easiest “it just works” option with an incredibly snappy interface.

• Best For: Users who want fast setup without Linux tinkering.
• New for 2026: A custom, ultra-low-latency WebRTC engine, SSH disabled by default, physical-button administrative confirmation, and audio support finally rolling out. Note: It lacks native PoE (requiring a separate splitter) and relies on a mini-HDMI port that needs an adapter.
• Security: Two flaws disclosed in March 2026 were fixed in v0.5.4. A great choice as long as it’s updated.
• Price: ~$150 / £115.

3. The Polished Professional: TinyPilot Voyager 3

New for early 2026, the Voyager 3 is the most refined commercial KVM-over-IP we’ve tested.

• Best For: Professional out-of-band management, MSPs, and multi-user teams.
• New for 2026: Combines KVM over IP and a built-in serial console server. TinyPilot is also beta-testing a Central Management System that allows fleet management of multiple units and can be self-hosted via Docker.
• Security: Designed to run over VPN or Zero Trust overlays — notably not implicated in the March 2026 vulnerability disclosures.
• Price: ~$400 / £340 (Standard); varies by configuration.

4. The Enterprise Workhorse: Raritan Dominion KX IV-101

If you are managing a 4K broadcast suite or a mission-critical data centre, this is the only choice.

• Best For: 4K @ 60fps requirements and high-security government/enterprise labs.
• New for 2026: Integration with CommandCenter Secure Gateway for centralised management of thousands of units with FIPS 140-2 encryption.
• Price: ~$1,100 / £850 (new).

📊 2026 Comparison Table

Feature	PiKVM V4 Plus	JetKVM	TinyPilot Voyager 3	Raritan KX IV-101	Aten KN8132V	NanoKVM (RISC-V)
Max Resolution	1920×1200 (4K Lab)	1080p @ 60fps	1920×1200 @ 60fps	4K @ 60fps	1920×1200	1080p
Security Rating	A+ (Open Source)	B+ (Fixed in v0.5.4)	A (ZTNA-ready)	A+ (Enterprise)	A (FIPS)	F (Critical risks)
Access Tech	HTML5 / VNC	WebRTC / Cloud	HTML5 / TLS	HTML5 / Client	HTML5 / Java-Free	Web Panel
Special Feature	ATX Power Control	Ultra-Low Latency	Serial + 8 users	High-motion 4K	32-Port Density	Extremely Cheap
Price (Approx)	£220	£115	£340	£850	£3,500+	£45

🛠 New Products & Trends to Watch

• Direct-USB “Crash Cart” KVMs: A growing trend of IP-KVMs that skip the LAN entirely, plugging directly into a laptop via USB-C for local hardware maintenance. The Dez KVM Go is an incredible open-source value at just $25, running entirely in a browser via Web Serial. The Open Interfaces KVM Go ($120) offers a more premium alternative powered seamlessly over the USB-C control connection.
• Built-in Multi-Port Switchers (GL-iNet Comet X): GL-iNet is expanding its Comet lineup with the Comet Pro (adding Wi-Fi, a touchscreen, and 4x storage for ISOs) and the upcoming Comet X, which integrates a four-port computer switcher directly into the unit.
• The JetKVM Clone (Arc KVM): A highly anticipated unit that mirrors the JetKVM aesthetic and software but fixes its biggest physical annoyances by including a full-size HDMI port and native PoE out of the box.
• Passive VGA Adapters (Leaf KVM): Recently crowdfunded on Crowd Supply, the Leaf KVM is notable for its unique passive VGA adapter, which allows interfacing with legacy servers (like old XServes) without eating up an extra USB port for power.
• BliKVM v4: An open-source, Linux-based PiKVM-family unit with PoE, 4K HDMI loop-out, BIOS/UEFI access, and remote power cycling.
• Aten “Secure” 5K Series: “Air-gapped” hardware designed for military use, physically preventing data leakage between classified and unclassified networks.

💡 Final Recommendation

• For the Home Lab: Stick with the PiKVM V4 — the cleanest security record and best-supported option.
• For the “Plug-and-Play” User: The JetKVM offers the best performance-to-price ratio — just ensure it’s running firmware 0.5.4 or later.
• For Professionals & MSPs: The TinyPilot Voyager 3 is the best polished, commercial choice — multi-user, serial console included, and now offering self-hosted fleet management.
• For Enterprise: The Raritan KX IV handles high-motion 4K video flawlessly.
• Avoid: Unbranded ultra-cheap clones (especially the Angeet/Yeeso ES3) and keep the Sipeed NanoKVM out of any professional environment.

Whatever you choose: never expose the web panel to the internet, put it behind ZTNA (WireGuard/Tailscale) on a management VLAN, and keep firmware current.