What is CVE-2020-27524?

CVE-2020-27524 is a high-severity vulnerability in Audi A7, classified under Use of Externally-Controlled Format String. CVSS score: 7.1/10. Published 2020-11-11.

How severe is CVE-2020-27524?

High severity. CVSS v3 base score is 7.1 out of 10.

Vulnerability in Audi A7

CVE-2020-27524

On Audi A7 MMI 2014 vehicles, the Bluetooth stack in Audi A7 MMI Multiplayer with version (N+R_CN_AU_P0395) mishandles %x and %s format string specifiers in a device name. This may lead to memory content leaks and potentially crash the services.

Published 2020-11-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H.

EPSS exploit prediction

EPSS: 0.012 (66.4th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 66.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Audi A7
Audi Mmi Multiplayer — versions n+r_cn_au_p0395, n\+r_cn_au_p0395

Weakness classification (CWE)

CWE-134 — Use of Externally-Controlled Format String

References

www.youtube.com/watch (Exploit, Third Party Advisory)
twitter.com/Kevin2600/status/1316380576593571840 (Third Party Advisory)
tiger-team-1337.blogspot.com/2020/10/audi-a7-2014-mmi-mishandles-format.html (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-27524?: CVE-2020-27524 is a high-severity vulnerability in Audi A7, classified under Use of Externally-Controlled Format String. CVSS score: 7.1/10. Published 2020-11-11.
How severe is CVE-2020-27524?: High severity. CVSS v3 base score is 7.1 out of 10.