What is CVE-2018-16806?

CVE-2018-16806 is a medium-severity vulnerability in Pektron Passive Keyless Entry And Start System, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 6.5/10. Published 2018-09-10.

How severe is CVE-2018-16806?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Pektron Passive Keyless Entry And Start System

CVE-2018-16806

A Pektron Passive Keyless Entry and Start (PKES) system, as used on the Tesla Model S and possibly other vehicles, relies on the DST40 cipher, which makes it easier for attackers to obtain access via an approach involving a 5.4 TB precomputation, followed by wake-frame reception and two challenge/response operations, to clone a key fob within a few seconds.

Vulnerability class: POODLE (CVE-2014-3566)

Published 2018-09-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.005 (38.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-327 — Use of a Broken or Risky Cryptographic Algorithm

References

www.esat.kuleuven.be/cosic/fast-furious-and-insecure-passive-keyless-entry-and-… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-16806?: CVE-2018-16806 is a medium-severity vulnerability in Pektron Passive Keyless Entry And Start System, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 6.5/10. Published 2018-09-10.
How severe is CVE-2018-16806?: Medium severity. CVSS v3 base score is 6.5 out of 10.