CVE-2023-32157
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedTesla Model 3 bsa_server BIP Heap-based Buffer Overflow Arbitrary Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected Tesla Model 3 vehicles. An attacker must first obtain the ability to pair a malicious Bluetooth device with the target system in order to exploit this vulnerability. The specific flaw exists within the bsa_server process. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of an unprivileged user in a sandboxed process. . Was ZDI-CAN-20737.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceHeap-based buffer overflow in Tesla Model 3 bsa_server process due to lack of proper validation of user-supplied data length before copying to a fixed-length heap buffer. Exploitation requires pairing a malicious Bluetooth device with the target vehicle, enabling arbitrary code execution in the context of an unprivileged user in a sandboxed process.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 2023.6CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Adjacent
- Complexity
- High
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Check vehicle firmware versionAccess the vehicle's info screen via the central touchscreen: tap 'Controls' > 'Software' to view the current firmware version numberAffected if The displayed firmware version is exactly 2023.6
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Verify Bluetooth functionalityCheck if Bluetooth is enabled on the vehicle: go to 'Controls' > 'Bluetooth' and see if the toggle is activeAffected if Bluetooth is currently enabled on the vehicle
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Inspect paired Bluetooth devicesIn the same Bluetooth menu, review the list of paired devices to see if any unknown or suspicious devices are connectedAffected if There are untrusted or unrecognized Bluetooth devices paired to the vehicle
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Confirm bsa_server process statusAccess the vehicle's diagnostic interface (if available through service mode) and check for the bsa_server process running under the Bluetooth stackAffected if The bsa_server process is active and running
A Tesla Model 3 vehicle is affected if it is running firmware version 2023.6 with Bluetooth enabled and has a malicious Bluetooth device capable of being paired with the vehicle.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataApply Tesla vehicle software updates to patch the bsa_server vulnerability; no practical workarounds exist for this embedded system flaw requiring OTA firmware deployment.
- Consultation6.0 h
- Implementation10.0 h
- Testing16.0 h
- Review / QA8.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $10,944.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-32157 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-32157 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data