CVE-2020-24395: The USB firmware update script of homee Brain Cube v2 (2.28.2 and 2.28.4) devices allows an attacker with phys

Routine

MEDIUM 6.8MITIGATE

CVE-2020-24395 is a medium-severity flaw (CVSS 6.8) affecting brain cube core. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The USB firmware update script of homee Brain Cube v2 (2.28.2 and 2.28.4) devices allows an attacker with physical access to install compromised firmware. This occurs because of insufficient validation of the firmware image file and can lead to code execution on the device.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.8 (Medium)
Attack vector	Physical
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 85%)
CISA exploited list	No
Weakness	CWE-345
Published	2021-05-20
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: hom.ee

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-05-20 14:15 UTCPublished CVE record published
2026-06-17 03:05 UTCUpdated Record last modified

hom.ee brain cube core MITIGATE

Affected: 2.28.2 · 2.28.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.28.2

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-24395?

brain cube core: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-24395 being exploited?

CVE-2020-24395 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-24395 affect?

CVE-2020-24395 affects brain cube core. Severity is medium (CVSS 6.8). The USB firmware update script of homee Brain Cube v2 (2.28.2 and 2.28.4) devices allows an attacker with physical access to install compromised firmware. This occurs because of insufficient validation of the firmware image file and can lea

How urgent is CVE-2020-24395?

Priority 28/100. No elevated risk signals yet.

Related CVEs

CVE-2020-24396 HIGH 7.5 MITIGATE homee Brain Cube v2 (2.28.2 and 2.28.4) devices have sensitive SSH keys within downloadable and unencrypted fi
CVE-2019-16258 MEDIUM 6.8 UPGRADE The bootloader of the homee Brain Cube V2 through 2.23.0 allows attackers with physical access to gain root ac

References

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