CVE-2025-32056
📋 TL;DR
This vulnerability allows attackers to bypass the anti-theft protection mechanism in Nissan Leaf vehicles by sniffing CAN bus traffic or pre-calculating response values. Attackers can reveal all 32 corresponding responses to unlock the vehicle without authorization. This affects Nissan Leaf ZE1 models manufactured in 2020.
💻 Affected Systems
- Nissan Leaf ZE1
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete vehicle theft by unauthorized individuals who can unlock and start the vehicle remotely or physically.
Likely Case
Local vehicle theft by attackers with physical access who can exploit the CAN bus vulnerability to bypass anti-theft systems.
If Mitigated
Unauthorized access prevented through physical security controls and network segmentation of vehicle systems.
🎯 Exploit Status
Exploitation requires CAN bus access either through physical connection or proximity sniffing. Attack details published in Black Hat Asia 2025 presentation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.nissan.co.uk/vehicles/new-vehicles/leaf.html
Restart Required: No
Instructions:
Contact Nissan dealership for potential firmware updates. No official patch information available at this time.
🔧 Temporary Workarounds
Physical Security Enhancement
allImplement additional physical security measures to prevent unauthorized access to the vehicle's CAN bus network.
Network Segmentation
allIsolate vehicle networks from other systems and implement CAN bus intrusion detection systems.
🧯 If You Can't Patch
- Implement physical security controls to prevent unauthorized access to the vehicle's OBD-II port and internal wiring
- Use steering wheel locks and other mechanical anti-theft devices as additional layers of protection
🔍 How to Verify
Check if Vulnerable:
Check vehicle manufacturing year and model. If 2020 Nissan Leaf ZE1, assume vulnerable until confirmed otherwise by Nissan.Check Version:
Check vehicle information display or consult dealership with VIN numberVerify Fix Applied:
Contact Nissan dealership to verify if firmware updates addressing CVE-2025-32056 are available for specific VIN.📡 Detection & Monitoring
Log Indicators:
- Unusual CAN bus traffic patterns
- Multiple failed anti-theft authentication attempts followed by successful bypass
Network Indicators:
- Suspicious CAN bus message patterns targeting anti-theft mechanism
- Unexpected response generation sequences
SIEM Query:
CAN bus monitoring: Look for patterns matching known anti-theft bypass sequences (32-response patterns)