KVM Ultimate Buyer’s Guide
Updated May 29, 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, with reports that the FBI made inquiries to a high-profile tech reviewer about it. The flaws are real — insecure firmware updates, weak password handling, command injection and device-ID leakage — and CVE-2026-32296 (config-endpoint exposure) was patched in NanoKVM 2.3.1 / NanoKVM Pro 1.2.4. Two points deserve a fairer treatment than the early headlines gave them: the on-board microphone was, in fact, documented on the underlying LicheeRV Nano dev-board wiki, and Sipeed has since added a direct reference and updated retailer listings. The legitimate ongoing concerns are the update mechanism and the fact that the device routes DNS through Chinese servers by default and phones home to Sipeed infrastructure for updates and a closed-source binary. 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 was not exempt. It shipped with CVE-2026-32294 (insufficient firmware-update verification) and CVE-2026-32295 (insufficient rate limiting), both fixed in firmware v0.5.4 (current builds are on the 0.5.x rolling release). It remains a strong pick — the vendor responded fast — provided you run 0.5.4 or later.
- PiKVM V4 & TinyPilot (cleanest records): Neither carried any new 2026 CVEs of note. The one PiKVM caveat is reputational rather than technical: IP-KVMs including PiKVM and TinyPilot have been used by North-Korean IT-worker “laptop farms” for covert remote access — a reminder that these devices belong 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 (CVE-2025-3710 to CVE-2025-3714, 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 (aligned with Eclypsium’s guidance):
- Never expose the web panel directly to the internet. Front it with Zero Trust Network Access (ZTNA) — modern units such as the 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 big improvements to the “Mass Storage” feature, letting you mount ISOs over the network roughly 3× faster than previous versions.
- Security: The cleanest record of any device here — no notable 2026 CVEs. Pair it with WireGuard/Tailscale rather than port-forwarding.
- Price: ~$280 / £220.
2. The High-Speed Challenger: JetKVM
JetKVM remains the most reactive competitor to PiKVM and the easiest “it just works” option.
- Best For: Users who want fast setup without Linux tinkering.
- New for 2026: A custom, ultra-low-latency WebRTC engine, SSH disabled by default, and physical-button confirmation for certain administrative changes.
- Security: Two flaws were disclosed in March 2026 (firmware-update verification and rate limiting) but both were fixed in v0.5.4, and the vendor’s rolling release has since moved on to 0.5.x. A good choice as long as you keep it on 0.5.4 or later.
- 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 — reviewers have floated it as possibly the best on the market. It targets the gap between DIY PiKVM and consumer JetKVM: a turnkey, professionally built unit aimed at MSPs, server rooms and multi-user teams.
- Best For: Professional out-of-band management, MSPs, and teams that need multi-user access.
- New for 2026: Combines KVM over IP and a built-in serial console server in a single device. Java-free HTML5 console, virtual media for ISO mounting and remote OS installs, and up to 8 simultaneous remote users.
- Specs: Quad-core 1.5 GHz ARM, 2 GB RAM, 32 GB storage, 1920×1200 @60fps, TLS/HTTPS throughout.
- Security: Designed to run over VPN or Zero Trust overlays rather than be exposed to the public internet — and notably not implicated in the March 2026 IP-KVM 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, allowing centralised management of thousands of units with FIPS 140-2 encryption.
- Alternative: For large estates, the Vertiv Avocent AV3000 is a credible enterprise rival worth pricing up.
- 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+ (CVEs fixed in v0.5.4 — keep updated) | A (Commercial, ZTNA-ready) | A+ (Enterprise) | A (FIPS — patch 2025 CVEs) | F (Critical risks; fixes in progress) |
| Access Tech | HTML5 / VNC | WebRTC / Cloud | HTML5 / TLS | HTML5 / Client | HTML5 / Java-Free | Web Panel |
| Special Feature | ATX Power Control | Integrated Display | Serial console + 8 users | Ultra-Low Latency | 32-Port Density | Extremely Cheap |
| Price (Approx) | £220 | £115 | £340 | £850 | £3,500+ | £45 |
Steer well clear of unbranded clones such as the Angeet/Yeeso ES3, which carries unpatched critical (CVSS 9.8) remote-code-execution flaws as of this update.
🛠 New Products & Trends to Watch
TinyPilot Voyager 3 (Early 2026)
Covered above as a top pick — the standout new commercial unit of the year, merging KVM over IP with a serial console server and Zero-Trust-first deployment.
BliKVM v4 (Open-Source, PoE)
An open-source, Linux-based PiKVM-family unit from Viprh with PoE, 4K HDMI loop-out, BIOS/UEFI access and remote power cycling. A good shout for anyone who wants Power-over-Ethernet that the stock PiKVM doesn’t offer natively.
Aten “Secure” 5K Series (May 2026)
Aten recently debuted the industry’s first 5K PSD PP v4.0-certified KVMs — “air-gapped” hardware designed for military use, where data leakage between classified and unclassified networks must be physically impossible.
The “All-in-One” Docking KVM
Brands such as StarTech and TESmart have released KVM-over-IP units that double as USB-C docking stations. Dock a laptop via a single cable and the KVM delivers power (100W PD), video and remote IP access simultaneously.
💡 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 still offers the best performance-to-price ratio — just make sure it’s running firmware 0.5.4 or later, which closes the March 2026 vulnerabilities.
- For Professionals & MSPs: The TinyPilot Voyager 3 is the best polished, commercial choice — multi-user, serial console included, and Zero-Trust by design.
- For Enterprise: The Raritan KX IV is the only unit that truly handles high-motion 4K video without stuttering (the Vertiv Avocent AV3000 is a worthy alternative). If you run Aten, keep firmware patched against the 2025 advisories.
- Avoid: Unbranded ultra-cheap clones — above all the Angeet/Yeeso ES3, which has unpatched critical RCE flaws. Keep the Sipeed NanoKVM out of any professional environment; it is improving but still bottom-tier on security.
- 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.
🌡 Keeping the Temperature in Check
When deploying any IP-KVM, remember that 4K encoding generates significant heat. If your KVM sits in a closed cabinet, use a unit with active cooling (like the PiKVM V4 Plus) or monitor ambient temperature via an external sensor (e.g. Ubiquiti SuperLink) to avoid “video ghosting” — a common sign of an overheating KVM encoder.
