CVE-2018-9311: The Telematics Control Unit (aka Telematic Communication Box or TCB), when present on BMW vehicles produced in

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CRITICAL 9.8REMOTEMITIGATE

CVE-2018-9311 is a critical-severity flaw (CVSS 9.8) affecting telematics control unit firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Telematics Control Unit (aka Telematic Communication Box or TCB), when present on BMW vehicles produced in 2012 through 2018, allows a remote attack via a cellular network.

Why this priority

Critical severity
EPSS top 10%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	3.9% (top 10%)
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 telematics control unit 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-2018-9311?

telematics control unit firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-9311 being exploited?

CVE-2018-9311 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-2018-9311 affect?

CVE-2018-9311 affects telematics control unit firmware. Severity is critical (CVSS 9.8). The Telematics Control Unit (aka Telematic Communication Box or TCB), when present on BMW vehicles produced in 2012 through 2018, allows a remote attack via a cellular network.

How urgent is CVE-2018-9311?

Priority 67/100. Critical severity; EPSS top 10%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2018-9318 CRITICAL 9.8 MITIGATE The Telematics Control Unit (aka Telematic Communication Box or TCB), when present on BMW vehicles produced in

References

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