Security readout for executives and security teams
Plain-English summary
Some Tesla Model X vehicles before November 23, 2020 used key fobs where only five VIN digits were needed for part of Bluetooth wake-up authentication. Because a full VIN can be read from outside the car, this weakened an important trust check around the vehicle key system.
Executive priority
Treat this as a high-priority fleet exposure if your organization owns or manages affected Model X vehicles. The business risk is concentrated but tangible: a vehicle access control weakness tied to externally visible information.
Technical view
The CVE describes a Model X key fob authentication weakness involving the body control module Bluetooth wake-up path. The authentication material was derived from five VIN digits, while the full VIN is externally visible. Public sources provided do not include CVSS, CWE, detailed affected-version mapping, or confirmed exploitation in the wild.
Likely exposure
Exposure appears limited to Tesla Model X vehicles before November 23, 2020 that used the affected key fob and BCM behavior. The source bundle does not identify other Tesla models or third-party products.
Exploitation context
CISA KEV is false, and the provided sources do not establish active exploitation. The issue was publicly reported, and the weakness is meaningful because it depends on vehicle-identifying data visible from outside the vehicle.
Researcher notes
Evidence is narrow. The CVE description names the weak VIN-derived authentication condition and the BCM Bluetooth wake-up action, but the bundle lacks CVSS, CWE, patched build identifiers, and confirmed exploitation status. Avoid broad Tesla conclusions without vendor-specific confirmation.
Mitigation direction
- Confirm Tesla vendor guidance for affected Model X vehicles.
- Verify vehicle software and key fob-related updates after November 23, 2020.
- Prioritize fleet-owned Model X vehicles with key fob use.
- Restrict unnecessary physical access to high-value vehicles pending confirmation.
- Track remediation evidence in fleet asset records.
Validation and detection
- Inventory Tesla Model X vehicles manufactured or maintained before November 23, 2020.
- Confirm current vehicle software status through Tesla-supported channels.
- Check whether key fobs were updated, replaced, or remediated.
- Record VINs and remediation status without exposing VIN data unnecessarily.
- Review security advisories before declaring the issue closed.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2020-29439 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wired.com/story/tesla-model-x-hack-bluetooth/CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.