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A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11Yes—the July 2022 report was real, but its headline was easy to overread. Researchers found a weakness in Honda’s rolling-code keyless-entry system, known as Rolling-PWN, that could allow unauthorized unlocking of certain tested vehicles. Honda acknowledged that sophisticated equipment and technical expertise could mimic remote-keyless commands, while also saying the attack could not drive the vehicle away without the legitimate key fob.
The evidence did not show that every Honda could be remotely stolen. It showed a serious access and keyless-control flaw affecting specific tested vehicles, with researchers arguing that the underlying design may have been used more widely.
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What Honda admitted
The report came from a SecurityWeek article published July 13, 2022, covering research by Kevin2600 and Wesley Li of Star-V Lab. The researchers called the vulnerability Rolling-PWN and associated it with CVE-2021-46145.
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The researchers said an attacker could manipulate the synchronization process used by Honda’s key fobs and reuse previously captured commands. Honda later acknowledged that an attacker with “sophisticated tools and technical know-how” could mimic remote-keyless commands and gain access to certain vehicles.
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- 【Programming】This car key fob are easy to follow step by step programming by yourself via refering website, which are included with the third product picture or the product details page.
- 【Fitment】The key remote control compatible with Honda Civic EX LX DX 2001 2002 2003 2004 2005/ Honda Pilot 2003 2004 2005 2006 2007 . Please check the compatibility before your purchase, make sure it is exactly what you need. Will not work with Honda Civic SI trim models.
- 【Part Numbers】This car remote works as a replacement for FCC ID: NHVWB1U523 or NHVWB1U521 and part numbers: 72147-S5A-A01, 08E61-S5D-1M0-01. Please match these part numbers with your original remote.
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- 【Note】Please confirm same button combination and model number with your original remote before purchase. If you have any questions with our key fob, please communicate with us at any time.
Honda’s important qualification was that the attack required close-proximity capture of multiple sequential radio transmissions. It was not simply a matter of replaying one button press from a long distance. Honda also said the vehicle still required the physical key fob inside the car for it to be driven away.
How a rolling-code key fob is supposed to work
A key fob sends a radio command when its owner presses a button. Older or poorly designed systems may use a fixed code, meaning an attacker who records that transmission could replay it later. Modern remote-entry systems generally use changing codes, often called rolling codes, so that each valid command is different.
The fob and vehicle maintain a synchronization counter. Because drivers sometimes press the fob while out of range, the vehicle normally accepts a limited window of future codes rather than requiring perfect one-to-one synchronization.
According to the Rolling-PWN researchers, Honda’s implementation could be manipulated during that synchronization process. Under the described conditions, older captured commands could become usable again, defeating the protection that rolling codes are intended to provide.
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- SHELL ONLY (NO ELECTRONICS / NO CHIP INCLUDED): This is a replacement key fob shell only — no circuit board, battery, or electronics included. Move your original internals into this car key cover.
- NO CUTTING REQUIRED: Easy DIY installation. Move your existing key blade and internal components from your original remote into the new shell. No cutting or locksmith required.
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- TRANSPONDER CHIP REQUIRED TO START CAR: If your original key fob has a transponder chip, you must transfer it (some users secure it with a small amount of glue). Without the chip, the vehicle may not start.
This is a conceptual explanation, not a practical exploit guide. Carrying out the attack required specialized equipment, technical knowledge, and repeated close-range signal capture.
Which Honda vehicles were tested?
The researchers reported successful testing on the following vehicles:
| Model year | Model | Evidence and limitations |
|---|---|---|
| 2012 | Honda Civic | Tested; this is the vehicle specifically identified in the formal CVE record. |
| 2018 | Honda X-RV | Tested; market-specific equipment may differ from U.S. versions. |
| 2020 | Honda CR-V | Tested. |
| 2020 | Honda Accord | Tested. |
| 2020 | Honda Odyssey | Tested. |
| 2021 | Honda Inspire | Tested; this name is associated with markets outside the United States. |
| 2021 | Honda Accord | Independently verified by The Drive’s Rob Stumpf, according to the research page. |
| 2022 | Honda Fit | Tested. |
| 2022 | Honda Civic | Tested. |
| 2022 | Honda VE-1 | Tested; market-specific equipment may differ. |
| 2022 | Honda Breeze | Tested; market-specific equipment may differ. |
Testing a vehicle does not establish that every trim, production unit, software revision, or market version has the same vulnerability. Names such as X-RV, Inspire, VE-1, and Breeze also reflect markets outside the United States, so American owners should not assume that an identically named or similarly dated vehicle uses identical hardware.
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1Scan for outdated or missing drivers - takes under a minute2Clear out junk files and repair common Windows errors3Fix the driver behind crashes, sound loss and screen glitchesDoes the flaw affect every Honda?
No such universal conclusion was established. The researchers believed the same or similar rolling-code design could affect Honda vehicles sold from approximately 2012 through 2022. That was an extrapolation from testing, not a demonstrated result for every Honda model, trim, market, and software revision.
The NIST National Vulnerability Database entry is narrower. It formally describes a replay attack involving a non-expiring rolling code and counter resynchronization in the key-fob subsystem of a 2012 Honda Civic. NVD lists the vulnerability with a CVSS 3.1 base score of 5.3, rated Medium, and characterizes the attack as requiring proximity and high complexity.
For an individual vehicle, the relevant questions are its exact model, model year, market, keyless-entry hardware, and software history—not simply whether it is a Honda from a particular decade.
Unlocking, starting, and driving away are different claims
| Claim | What the evidence supports | Qualification |
|---|---|---|
| Unlock the doors | Researchers demonstrated the method on tested vehicles, and Honda acknowledged that remote-keyless commands could be mimicked on certain vehicles. | The attacker needed specialized equipment, expertise, and close-proximity capture of multiple transmissions. |
| Start the engine | The researchers described starting capability in some circumstances, and related Honda keyless flaws have been associated with start functions. | This should be tied to the specific vehicle and vulnerability, not generalized to every Honda. |
| Drive the vehicle away | Honda said the described Rolling-PWN attack could not do this by itself. | The legitimate key fob was still required inside the vehicle for operation. |
An unauthorized unlock could still matter even if theft were not possible. It could expose belongings, allow tampering, or provide access to the cabin. But “hackers can remotely steal every Honda” is not an accurate summary of the evidence.
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Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Rolling-PWN was not the same as every Honda keyless flaw
Rolling-PWN involved manipulation of a rolling-code synchronization mechanism. That is different from a conventional fixed-code replay attack, in which an attacker records one unchanging radio transmission and replays it later.
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- KEY FOB COVER / KEY FOB CASE REPLACEMENT: Replacement key fob cover / key fob case — swap your original cut key blade into the new shell (DIY, no locksmith, no cutting).
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- SHELL ONLY (NO ELECTRONICS / NO CHIP INCLUDED): This is a replacement key fob shell only — no circuit board, battery, or electronics included. Move your original internals into this car key cover.
- TRANSPONDER CHIP REQUIRED TO START CAR: If your original fob has a transponder chip, you must transfer it (some users secure it with a small amount of glue). Without the chip, the vehicle may not start.
A separate issue, CVE-2022-27254, concerned replaying an unencrypted RF signal in a Honda Civic keyless system. NVD describes that vulnerability as affecting locking, unlocking, and starting functions in the relevant system. It should not be merged with CVE-2021-46145: both involve Honda keyless systems, but they describe different weaknesses.
What Honda said about fixes
Contemporary reporting said Honda regularly improved security features in newer models but had no plan at that time to update older vehicles. The Rolling-PWN researchers said remediation would generally require an update to the vehicle’s body-control-module firmware, delivered over the air where supported or through dealer service.
Those were positions reported in 2022. The available evidence does not establish a universal 2026 recall, over-the-air patch, or dealer remedy for every vehicle associated with CVE-2021-46145. Software status can also vary by model, market, trim, and service history.
What Honda owners should do now
- Identify the exact vehicle. Record the VIN, model year, trim, market of sale, and whether it has keyless entry or push-button start.
- Contact Honda or an authorized dealer. Ask whether any keyless-entry, body-control-module, or security-related software update applies to that VIN.
- Check official databases. Use Honda’s official owner and service resources and the relevant government recall database rather than relying on generalized internet lists.
- Use ordinary physical security. Secure parking and a visible steering-wheel lock can add protection against theft, regardless of the electronic vulnerability question.
- Do not assume a new fob solves a vehicle-side flaw. Replacing the fob battery, changing the fob, or placing it in a metal box does not repair a weakness in the vehicle receiver or rolling-code synchronization logic.
- Do not test the exploit without authorization. Attempting to capture or replay vehicle signals can be unlawful and can interfere with someone else’s vehicle.
A Faraday pouch may help reduce some ordinary proximity-based key-fob risks, but it is not a fix for a vulnerability in the car’s own receiver and synchronization process.
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- Compatibility: Compatible with FCC ID N5F-S0084A,N5F-A05TAA. Please Check Our Product Description and Vehicle Fitment Tool for Full Compatible Vehicles List. This Remote Key Fob Replacement Is Compatible with Honda Civic EX Si Hybrid 2006 2007 2008 2009 2010 2011 2012 2013, Acura Mdx 2007-2013 (Note: Honda Civic DX models are not equipped with keyless system)
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- Packing List: 2 pieces X Honda Car ignition Key with Electronics and Battery Pre-Installed. Ready to Program
How serious was Rolling-PWN?
It was technically significant because it undermined a security mechanism specifically designed to prevent replay attacks. The formal NVD rating reflects a high-complexity, proximity-dependent attack—not a simple remote theft technique available to anyone with a phone or radio transmitter.
Risk also depends on whether an attacker can remain close enough to capture the necessary sequence, whether the particular vehicle uses the affected implementation, and whether its software has been updated. The researchers said the attack might leave little traditional evidence, but that is a researcher claim and should not be treated as a universal forensic rule.
The most accurate reading is therefore narrower than the headline: unauthorized access was credible and acknowledged for certain vehicles, while universal remote theft was not demonstrated.
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