What is CVE-2020-28656?

CVE-2020-28656 is a medium-severity vulnerability in Vw Polo, classified under Improper Validation of Integrity Check Value. CVSS score: 6.8/10. Published 2020-11-16.

How severe is CVE-2020-28656?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Vulnerability in Vw Polo

CVE-2020-28656

The update functionality of the Discover Media infotainment system in Volkswagen Polo 2019 vehicles allows physically proximate attackers to execute arbitrary code because some unsigned parts of a metainfo file are parsed, which can cause attacker-controlled files to be written to the infotainment system and executed as root.

Published 2020-11-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (26.0th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Vw Polo
Vw Polo Firmware — versions 2019

Weakness classification (CWE)

CWE-354 — Improper Validation of Integrity Check Value

References

www.contextis.com/en/blog/a-code-signing-bypass-for-the-vw-polo (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-28656?: CVE-2020-28656 is a medium-severity vulnerability in Vw Polo, classified under Improper Validation of Integrity Check Value. CVSS score: 6.8/10. Published 2020-11-16.
How severe is CVE-2020-28656?: Medium severity. CVSS v3 base score is 6.8 out of 10.