CVE-2015-2906: Mobile Devices (aka MDI) C4 OBD-II dongles with firmware 2.x and 3.4.x, as used in Metromile Pulse and other p

Q: How do I fix CVE-2015-2906?

c4 obd-ii dongle firmware: upgrade to newer than 3.4. Exact commands for each OS are on this page.

Q: Is CVE-2015-2906 being exploited?

CVE-2015-2906 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2015-2906 affect?

CVE-2015-2906 affects c4 obd-ii dongle firmware. Severity is high (CVSS 9.0). Mobile Devices (aka MDI) C4 OBD-II dongles with firmware 2.x and 3.4.x, as used in Metromile Pulse and other products, store SSH private keys that are the same across different customers' installations, which makes it easier for remote atta

Q: How urgent is CVE-2015-2906?

Priority 53/100. Critical severity

This month

HIGH 9.0UPGRADE

CVE-2015-2906 is a high-severity flaw (CVSS 9.0) affecting c4 obd-ii dongle firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Mobile Devices (aka MDI) C4 OBD-II dongles with firmware 2.x and 3.4.x, as used in Metromile Pulse and other products, store SSH private keys that are the same across different customers' installations, which makes it easier for remote attackers to obtain access by leveraging knowledge of a private key from another installation.

Why this priority

Critical severity

A fixed release or distro patch exists.

Risk facts

CVSS score	9.0 (High)
EPSS exploit chance	2.6% (top 15%)
CISA exploited list	No
Published	2015-08-23
Last modified	2026-06-17

Publisher (CNA): CERT/CC · Vendor: mobile devices

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

Am I affected?

Timeline

2015-08-23 21:59 UTCPublished CVE record published
2026-06-17 00:24 UTCUpdated Record last modified

mobile devices c4 obd-ii dongle firmware UPGRADE

Affected: <= 3.4

Fixed in: newer than 3.4

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-2015-2906?

c4 obd-ii dongle firmware: upgrade to newer than 3.4. Exact commands for each OS are on this page.

Is CVE-2015-2906 being exploited?

CVE-2015-2906 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-2015-2906 affect?

CVE-2015-2906 affects c4 obd-ii dongle firmware. Severity is high (CVSS 9.0). Mobile Devices (aka MDI) C4 OBD-II dongles with firmware 2.x and 3.4.x, as used in Metromile Pulse and other products, store SSH private keys that are the same across different customers' installations, which makes it easier for remote atta

How urgent is CVE-2015-2906?

Priority 53/100. Critical severity

Related CVEs

CVE-2015-2908 HIGH 9.0 UPGRADE Mobile Devices (aka MDI) C4 OBD-II dongles with firmware 2.x and 3.4.x, as used in Metromile Pulse and other p
CVE-2015-2907 HIGH 9.0 UPGRADE Mobile Devices (aka MDI) C4 OBD-II dongles with firmware 2.x and 3.4.x, as used in Metromile Pulse and other p

References

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