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In 2022, security researchers found an authorization flaw in a SiriusXM Connected Vehicle Services system that let them use a vehicle identification number (VIN) to access certain connected Honda, Nissan, Infiniti and Acura vehicles. The reported capabilities included retrieving owner details and remotely locating, unlocking or starting a vehicle. SiriusXM said it fixed the flaw within 24 hours of receiving the report and that it found no subscriber-data compromise or unauthorized account changes through that method. This was a historical server-side vulnerability—not evidence that a VIN can unlock cars today.
What the SiriusXM connected-car flaw allowed
In late November 2022, security researcher Sam Curry and colleagues reported an authorization weakness in the vehicle-enrollment and command path used by SiriusXM Connected Vehicle Services. The problem was in shared telematics infrastructure, rather than a flaw in one dashboard component. SecurityWeek reported that researchers first tested the path through NissanConnect and could submit crafted HTTP requests using a VIN.
According to the researchers’ report and contemporaneous coverage, the exposed functions included:
- Retrieving a vehicle owner’s name, phone number and address, along with car details.
- Locating a vehicle.
- Remotely unlocking or starting it.
- Flashing its headlights or honking its horn.
The VIN served as the identifier in the reported attack path; the issue was that the service did not properly authorize access to the vehicle and its commands. That does not mean a VIN is a universal key to a car, or that the same route is available now. The reporting describes what researchers could do through the vulnerable service in 2022, not a current test of every vehicle or account.
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Which brands and vehicles were in scope?
The reported VIN-based attack affected remotely connected Honda, Nissan, Infiniti and Acura vehicles using the vulnerable service path. The coverage does not establish a complete model-year list, nor does it show that every vehicle from those brands was vulnerable. A vehicle’s brand alone is therefore not enough to determine whether it was in scope.
SiriusXM’s Connected Vehicle Services website was reported in 2022 as serving more than 12 million vehicles in North America and listing Acura, BMW, Honda, Hyundai, Infiniti, Jaguar, Land Rover, Lexus, Nissan, Subaru and Toyota. That figure described the service’s reported footprint at the time; it is not a current fleet estimate, and it does not mean all listed brands or vehicles were exposed to the VIN-based flaw.
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Hyundai and Genesis had a separate issue
The same reporting described a distinct vulnerability affecting Hyundai and Genesis vehicles made after 2012. Researchers said that separate weakness could expose controls for the locks, engine, horn, headlights and trunk. Hyundai and Genesis said they added countermeasures after notification.
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This issue should not be conflated with the SiriusXM authorization flaw: the reporting treats Hyundai and Genesis as a separate case, with a different weakness. It does not identify them as additional brands affected by the VIN-based SiriusXM attack.
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Was personal information exposed or was the flaw exploited?
The researchers demonstrated that the vulnerable path could return owner details, including a name, phone number and address. That is evidence of what the weakness could expose, not evidence that criminals accessed those details at scale or that a particular owner’s information was taken.
SiriusXM said that, through the reported method, no subscriber or other data had been compromised and no unauthorized account had been modified. The cited reporting does not establish real-world criminal exploitation. The researchers’ demonstration shows a serious capability, but it should not be presented as proof that attackers used it against customers.
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What SiriusXM did and what owners should do
SiriusXM said it resolved the authorization flaw within 24 hours after the report was submitted. The reporting describes a vendor-side fix; it does not identify a device, accessory or consumer-installed update that owners needed to apply to remediate this server-side issue.
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- Keep the vehicle’s software and companion apps updated, and follow security notices from the automaker.
- If an account or telematics feature behaves unexpectedly, contact the automaker or service provider using its official support channel.
- Do not rely on a VIN cover, Faraday pouch or generic OBD accessory to fix a server authorization defect; those are not remediation for the reported issue.
These are general connected-car security precautions, not an indication that the 2022 SiriusXM vulnerability remains exploitable.
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