CVE-2019-6171

A vulnerability was reported in various BIOS versions of older ThinkPad systems that could allow...

6.4 Medium

A vulnerability was reported in various BIOS versions of older ThinkPad systems that could allow a user with administrative privileges or physical access the ability to update the Embedded Controller with unsigned firmware.

Attack profile

How easy it is to exploit

Attack vector: Physical
Complexity: High
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

0.34%Down 0.1 points since Apr 14, 2021

What each source reports

CVE List Score used 6.4

Record: CVE-2019-6171
CVSS 3.0: 6.4 MediumCVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

EUVDEUVD-2019-15738 6.4

Record: EUVD-2019-15738
CVSS 3.0: 6.4 MediumCVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-03

GitHub AdvisoriesGHSA-8pxc-53gq-54c7 6.8

A vulnerability was reported in various BIOS versions of older ThinkPad systems that could allow...

Record: GHSA-8pxc-53gq-54c7
CVSS 3.1: 6.8 MediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

NVD 6.8

Record: CVE-2019-6171
CVSS 3.1: 6.8 MediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.0: 6.4 MediumCVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 7.2 HighAV:L/AC:L/Au:N/C:C/I:C/A:C
Updated: 2026-11-02

Affected products

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History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases, published	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2019-6171 is a medium vulnerability (CVSS 6.4) in Lenovo Bios, published August 19, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.34%, the 28th percentile. No source names a fixed version.