CVE-2025-34251

Tesla Telematics Control Unit (TCU) firmware prior to v2025.14 contains an authentication bypass vulnerability. The TCU runs the Android Debug Bridge (adbd) as root and, despite a “lockdown” check that disables adb shell, still permits adb push/pull and adb forward. Because adbd is privileged and the device’s USB port is exposed externally, an attacker with physical access can write an arbitrary file to a writable location and then overwrite the kernel’s uevent_helper or /proc/sys/kernel/hotplug entries via ADB, causing the script to be executed with root privileges.

CVSS 4.0

8.6CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

EPSS

0.4% chance of exploitation in the next 30 days; higher than 38% of CVEs (scores of 2026-10-25)

CWEs

CWE-269, CWE-288

Published

2025-10-07

Modified

2026-10-09

Record from

the NVD, synced 2026-10-19

References

• https://www.nccgroup.com/research-blog/technical-advisory-tesla-telematics-control-unit-adb-auth-bypass/
• https://www.tesla.com/
• https://www.vulncheck.com/advisories/tesla-tcu-auth-bypass

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