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Yes, a vulnerability can expose a smart-lock PIN or let an attacker change device settings—but the disclosures available here do not show that every smart lock is vulnerable or that each reported flaw remotely opened a physical door. Risk depends on the exact product and software, the way it connects to accounts and services, what access an attacker already has, and whether the flaw has been fixed.
How a smart-lock vulnerability could affect a door
A smart lock pairs a physical deadbolt with software and, often, a phone app, wireless connection, user accounts, or remote services. A weakness in one of those digital components can undermine access controls without defeating the deadbolt itself. Depending on the flaw, an attacker might obtain a PIN, access device information, change settings, or bypass a permission boundary. Those outcomes are not interchangeable: access to information or settings does not by itself prove a door was physically unlocked.
The relevant distinction is between what an advisory says an attacker could do and what it documents happening to a physical lock. Attack prerequisites also vary: a flaw may involve a platform credential, a valid device identifier, an app or backend service, proximity, or physical access. The disclosures below concern different products and should not be treated as evidence that all smart locks share one vulnerability.
What documented disclosures show
| Product and date | Affected software or product | What the source says the flaw could enable | Physical door unlocked? | Remediation described |
|---|---|---|---|---|
| Rently Smart Home; CISA advisory released August 25, 2026 | Versions 20.1.0 and prior | Insufficiently protected credentials could expose PINs, including the Master PIN, and allow standard user permissions to be overridden. CISA advisory | The advisory describes PIN exposure and permission override; it is not evidence that an arbitrary consumer door lock was remotely opened. | Rently reportedly patched the issue in late June 2026. The advisory says no user action is required. |
| Nexx Smart Home; 2023 advisory | Products listed include a garage door controller, smart plug, and alarm | The NVD entry says an attacker with a valid device ID could retrieve device history and information and change settings. NVD CVE-2023-1750; see also the Canadian Centre for Cyber Security advisory. | The listed garage controller is not a door lock; the cited descriptions do not establish a physical door-lock unlock. | Patch status and user action are not stated in the cited details. |
| igloohome Android Smart Lock app; CISA advisory published July 28, 2026 | App versions 3.2.3 and prior | Sensitive information in source code could allow unauthorized access to functions or backend services that lacked sufficient authentication. CISA advisory | The advisory does not establish that an attacker physically unlocked a door. | The vendor reportedly enhanced backend access controls; the advisory says no user action is needed. |
| Ultraloq and Yale products; technical report dated November 8, 2023 | Ultraloq UL3 BT, Yale Conexis L1, Yale IA-210, and Yale Keyless Smart Lock | The report abstract confirms responsible disclosure and vendor acknowledgment, but the available details do not specify current affected firmware or the precise exploit effects. Technical report | Not established by the available report details. | Current patch status is not established by the available details. |
The Rently disclosure is the clearest example here of a flaw affecting credentials and permissions. It concerns the Rently smart-home platform and its specified versions—not every smart lock, nor a named consumer lock model generally. Nexx’s advisory is also not a smart door-lock finding: a garage door controller is a different product category, even though it controls access to a garage.
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- Connect to 2.4GHz WiFi, No Hub Needed：Connect your Philips 4200 Series Wifi Door Lock Deadbolt directly to your home WiFi network—no extra hub or bridge required. Manage your door anytime, anywhere through your smartphone. 𝙉𝙊𝙏𝙀: Please keep the smart lock within 33 ft (10 m) of your Wi-Fi router. Minimize obstacles such as walls, metal objects, and interference sources for a stronger connection.
- App Control with Real-Time Access：Control smart lock remotely via the Philips Home Access App: lock/unlock, manage user codes/fingerprints, check your door lock status, and monitor access history in real time, etc, whether you’re at work or on vacation.
- Voice Assistant Compatible：Hands full? No problem. Use voice commands with Alexa or Google Assistant to lock or check the status of your front door lock set effortlessly.
- Versatile Passcode Options: This Keypad deadbolt supports permanent, one-time, periodic, and recurring PIN codes—perfect for family, guests, housekeepers, or Airbnb use. Easily manage and share access through the app for ultimate convenience and control.
- 0.3S Fingerprint Fast Access：With this fingerprint keyless entry door lock, unlock your door in 0.3 seconds with fast, secure biometric access. Store multiple fingerprints for family and trusted visitors.
What the research on smart-lock design adds
A 2016 academic study by Ho, Leung, Mishra, Hosseini, Song, and Wagner examined five commercially available smart-lock systems. The authors found that each system in their sample had at least one of the attack weaknesses they examined, including issues involving access revocation, logging, or automatic unlocking. That result describes five systems studied at that time; it is not a current estimate of how many locks on the market are vulnerable. Read the paper.
The study is useful because it highlights risks beyond secret-stealing or encryption failures. A system may have difficulty reliably revoking a former user’s access, keeping a trustworthy record of entry, or making automatic unlocking behave safely. Its findings are historical and limited to the systems examined, so they should not be used to judge a current model without current product-specific information.
Rank #2
- 𝐅𝐥𝐞𝐱𝐢𝐛𝐥𝐞 𝐖𝐚𝐲𝐬 𝐭𝐨 𝐔𝐧𝐥𝐨𝐜𝐤: Unlock the way you want: app, passcode, fingerprint, physical key, or voice via Alexa/Google Assistant. Everyone in the family can choose what works best — convenience meets flexibility. Batteries are not included.
- 𝐔𝐧𝐥𝐨𝐜𝐤 𝐅𝐫𝐨𝐦 𝐀𝐧𝐲𝐰𝐡𝐞𝐫𝐞: Built-in Wi-Fi lets you lock and unlock your door remotely anytime, anywhere from your smartphone — no extra hub needed. Stay connected and in control, even when you’re at work or on vacation. Only support 2.4Ghz network. Keep the router and lock with 65ft for better remote control.
- 𝗩𝗼𝗶𝗰𝗲 𝗖𝗼𝗻𝘁𝗿𝗼𝗹 𝗥𝗲𝗮𝗱𝘆: Pair with Alexa or Google Assistant to unlock or lock with your voice. Great for when your hands are full or you're relaxing at home and still welcome who’s at the door. Note: Please log in to your own Google or Alexa account first before use Voice Control and make sure your network connection is stable.
- 𝗬𝗼𝘂𝗿 𝗙𝗶𝗻𝗴𝗲𝗿𝘀 𝗶𝘀 𝗬𝗼𝘂𝗿 𝗞𝗲𝘆: Just one touch unlocks the door instantly. No need to search for keys — Your fingers is your keys, perfect for busy mornings. Philips wifi lock store multiple prints for easy family access.
- 𝐂𝐨𝐝𝐞 𝐀𝐜𝐜𝐞𝐬𝐬 𝐌𝐚𝐝𝐞 𝐒𝐢𝐦𝐩𝐥𝐞: Create up to 100 custom passcodes for family, friends, or renters. Easily share unlimited one-time or scheduled codes to guests, cleaners, or deliveries— no need to be home to open the door.
How to check and reduce risk for a lock you own
- Identify the whole setup. Record the manufacturer, exact lock model, app, firmware version, and any hub or cloud service the lock depends on. A weakness may be in an app or platform rather than the lock’s mechanical hardware.
- Check the vendor’s current security notices. Match the notice to your exact model and software version. An advisory for another product—or an older version range—does not establish that your lock is affected.
- Install updates for both lock and app. Follow the manufacturer’s update process and check whether a hub or other connected component also needs an update. Confirm the version afterward if the app or vendor provides it.
- Review access and credentials. Change PINs or account credentials if the vendor says they may have been exposed, and do not reuse a compromised credential elsewhere. Remove former users and shared access that are no longer needed.
- Inspect logs and recovery settings. Review available access history and make sure account recovery methods are current. Logs can help identify unexpected access, though their presence alone does not prove they capture every relevant event.
- Ask about support duration. If the vendor does not clearly state how long it provides security updates for your model, ask before relying on connected features. Avoid testing devices you do not own or have permission to assess.
What these reports do—and do not—establish
These disclosures establish that weaknesses have affected particular smart-home platforms, apps, or connected products, and that some could expose access credentials or enable changes to permissions or settings. They do not establish a market-wide vulnerability rate, a current security ranking among lock brands, or that every reported issue resulted in a physical break-in. For an individual lock, the decisive facts are its exact version, the vendor’s remediation status, and the attacker access required by the specific flaw.
Quick Recap
Best Value
- Passcode Entry: This keypad lock offers 20 access codes for family use and a temporary code for single-use guest entry
- One-Time Code: A one-time PIN code can be set for door opening and will automatically be deleted after use
- Smart Locking: Features an automatic door lock that can be set to lock in 10-99 seconds (off by default) and one-touch auto-lock by pressing and holding any key on the keypad for 2 seconds
- Long Battery Life & Low Battery Indicator: Powered by 4 AA batteries (not included), lasts up to 365 days. A red light indicator alerts you when battery level drops below 15%
- Security Deadbolt: Provides reliable home protection with its sturdy aluminum alloy construction, weather resistance (IP54), durability, anti-peeping user code protection, low battery indicator, and solid lock cylinder
Rank #4
- ANYWHERE ACCESS: With built-in WiFi compatibility, you can easily and securely connect your Schlage Encode Deadbolt to your home WiFi network to control and monitor your home from anywhere with the Schlage Home app
- PEACE OF MIND: Lock and unlock from anywhere, manage up to 100 access codes for keyless entry, view lock history, receive customizable notifications and easily manage multiple locks at once - all when paired to the Schlage Home app and connected to a secure WiFi network
- VOICE CONTROL: Works with Alexa and Google Home for optional, hands-free convenience when paired with the Schlage Home app and a voice enabled device
- ADVANCED SECURITY: Secure, encrypted connection; built-in, customizable alarm for door movement and forced entry attempts; fingerprint-resistant touchscreen; certified highest residential Security, Durability and Finish rating by BHMA industry experts
- EASY INSTALL: Install in minutes with just a screwdriver, no hardwiring required; Snap ‘n Stay design helps keep the lock on the door so both hands are free; fits standard doors with 1-3/8 in to 1-3/4 in door thickness and 2-3/8 in or 2-3/4 in backset
Rank #3
- 6 Ways to Unlock: Unlock with a touch for less than 1s with fingerprint lock. You can also open your front door lock via the eufy Security app, using the keypad or physical key, from Apple Watch, or use your voice with Alexa/Google Voice Assistant.
- 8 Months Battery Life: With 8 AA batteries, Smart Lock C220 runs around 8 months. Experience ultimate convenience and peace of mind with our long-lasting power solution. *May vary depending on the frequency of the lock being used.
- Self-learning AI: Fingerprint door lock recognition gets more precise with every touch, so you don't have to try agian and again to get in. Never be awkward or upset at unlocking the door.
- Control from Anywhere with Built-in Wi-Fi: No bridge required, you can control your wifi smart lock from anywhere via the eufy Security app. Easy setup.
- Integrated eufy ecosystem: If you have a eufy doorbell, you can add your wifi door lock to your routines and control devices together for keyless entry within the eufy Security app.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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