CVE-2020-8539

Name: CVE-2020-8539
Creator: NVD / NIST
Published: 2020-12-01T18:15:12.323+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 2.26%

Last modified Jun 17, 2026

CVE-2020-8539 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Kia Motors Head Unit with Software version: SOP.003.30.18.0703, SOP.005.7.181019, and SOP.007.1.191209 may allow an attacker to inject unauthorized commands, by executing the micomd executable deamon, to trigger unintended functionalities. In addition, this executable may be used by an attacker to inject commands to generate CAN frames that are sent into the M-CAN bus (Multimedia CAN bus) of the vehicle.. EPSS estimates a 2.26% chance of exploitation in the next 30 days.

Description

Kia Motors Head Unit with Software version: SOP.003.30.18.0703, SOP.005.7.181019, and SOP.007.1.191209 may allow an attacker to inject unauthorized commands, by executing the micomd executable deamon, to trigger unintended functionalities. In addition, this executable may be used by an attacker to inject commands to generate CAN frames that are sent into the M-CAN bus (Multimedia CAN bus) of the vehicle.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

2.26%

80.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-276

Affected Software

Vendor	Product	Versions
Kia	Head Unit Firmware	sop.003.30.18.0703
Kia	Head Unit Firmware	sop.005.7.181019
Kia	Head Unit Firmware	sop.007.1.191209

References

https://gist.github.com/gianpyc/4dc8b0d0c29774a10a97785711e325c3Third Party Advisory
https://sowhat.iit.cnr.it/pdf/IIT-20-2020.pdfExploit, Third Party Advisory
https://gist.github.com/gianpyc/4dc8b0d0c29774a10a97785711e325c3Third Party Advisory
https://sowhat.iit.cnr.it/pdf/IIT-20-2020.pdfExploit, Third Party Advisory

Timeline

Published: Dec 1, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-8539?

How severe is CVE-2020-8539?

CVE-2020-8539 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 2.26% probability of exploitation in the next 30 days.

How do I fix CVE-2020-8539?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-8539?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST