CVE-2019-9977
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 · uneditedThe renderer process in the entertainment system on Tesla Model 3 vehicles mishandles JIT compilation, which allows attackers to trigger firmware code execution, and display a crafted message to vehicle occupants.
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 · moderate confidenceThe renderer process in the Tesla Model 3 entertainment system (infotainment) incorrectly handles Just-In-Time (JIT) compilation, allowing attackers to execute arbitrary firmware code and display malicious messages to vehicle occupants.
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 dataall versionsCVSS 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/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.
-
Confirm vehicle model and firmware versionAccess the vehicle's main screen, go to 'Settings' > 'Software' to view the vehicle's firmware version and confirm it is a Tesla Model 3Affected if Vehicle is a Tesla Model 3 with any firmware version listed (all versions are affected)
-
Check for unusual infotainment behaviorObserve the vehicle's center display for unexpected messages, pop-ups, or content that was not initiated by the userAffected if Any unexpected messages or visual content appears on the infotainment screen without user interaction
-
Verify renderer process integrityAccess the vehicle's developer mode (if enabled) and inspect running processes related to the infotainment renderer; look for processes with unusual characteristics or external connectionsAffected if Suspicious processes are found or unexpected network connections are established from the infotainment system
-
Check for unauthorized firmware modificationsCompare the current firmware version against the official Tesla firmware release notes; verify the firmware signature matches Tesla's expected cryptographic signatureAffected if Firmware version does not match official Tesla releases or fails signature verification
-
Monitor for unexpected code executionReview any available vehicle logs (if accessible through service mode) for entries indicating JIT compiler usage or code injection attempts in the infotainment subsystemAffected if Logs show unexpected JIT compilation events or code execution in the renderer process
A Tesla Model 3 vehicle is affected if it has any firmware version installed (all versions are vulnerable) and the infotainment system's renderer process is operational.
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 dataTesla should issue a firmware update addressing the JIT compilation vulnerability in the entertainment system renderer; owners should apply vehicle software updates when available.
- Consultation8.0 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 $8,704.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-9977 — 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-2019-9977 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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