CVE-2018-9312: The Head Unit HU_NBT (aka Infotainment) component on BMW i Series, BMW X Series, BMW 3 Series, BMW 5 Series, a

This month

HIGH 7.8MITIGATE

CVE-2018-9312 is a high-severity flaw (CVSS 7.8) affecting head unit hu nbt firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Head Unit HU_NBT (aka Infotainment) component on BMW i Series, BMW X Series, BMW 3 Series, BMW 5 Series, and BMW 7 Series vehicles produced in 2012 through 2018 allows a local attack when a USB device is plugged in.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-693
Published	2018-05-31
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: bmw

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

Am I affected?

Timeline

2018-05-31 12:29 UTCPublished CVE record published
2026-06-17 02:06 UTCUpdated Record last modified

bmw head unit hu nbt firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

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-2018-9312?

head unit hu nbt firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-9312 being exploited?

CVE-2018-9312 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-2018-9312 affect?

CVE-2018-9312 affects head unit hu nbt firmware. Severity is high (CVSS 7.8). The Head Unit HU_NBT (aka Infotainment) component on BMW i Series, BMW X Series, BMW 3 Series, BMW 5 Series, and BMW 7 Series vehicles produced in 2012 through 2018 allows a local attack when a USB device is plugged in.

How urgent is CVE-2018-9312?

Priority 45/100. High severity; Public exploit reference

Related CVEs

CVE-2018-9322 HIGH 7.8 MITIGATE The Head Unit HU_NBT (aka Infotainment) component on BMW i Series, BMW X Series, BMW 3 Series, BMW 5 Series, a
CVE-2018-9320 HIGH 7.8 MITIGATE The Head Unit HU_NBT (aka Infotainment) component on BMW i Series, BMW X Series, BMW 3 Series, BMW 5 Series, a
CVE-2018-9314 MEDIUM 6.8 MITIGATE The Head Unit HU_NBT (aka Infotainment) component on BMW i Series, BMW X Series, BMW 3 Series, BMW 5 Series, a
CVE-2018-9313 MEDIUM 5.3 MITIGATE The Head Unit HU_NBT (aka Infotainment) component on BMW i Series, BMW X Series, BMW 3 Series, BMW 5 Series, a

References

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