CVE-2020-8320

mediumpriority · track · 27OT risk · elevatedEPSS 0.003 · 21 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.28% (21st) EPSS

CVSS 4.6 · medium

Is it mine?

101 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

An internal shell was included in BIOS image in some ThinkPad models that could allow escalation of privilege.

cvss

Technical severity, 0–10. One row per scoring source.

6.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04.6mediumAV:L/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 3.9 · impact 6.4

v3.16.8mediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 0.9 · impact 5.9

v3.16.4mediumCVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.16.4mediumCVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · psirt@lenovo.comexploitability 0.5 · impact 5.9

v3.16.2mediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-269USprimaryCWE-489US

affected products (101)

Products and version ranges known to be affected.

Lenovo BIOSall versionsenisa_euvdEU
lenovo thinkpad 11e firmware< 2020-07-10nvdUScpe:2.3:o:lenovo:thinkpad_11e_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad 11e yoga gen 6 firmware< 2020-07-10nvdUScpe:2.3:o:lenovo:thinkpad_11e_yoga_gen_6_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad 13 2nd gen firmware< 2020-07-10nvdUScpe:2.3:o:lenovo:thinkpad_13_2nd_gen_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad 13 firmware< 2020-07-10nvdUScpe:2.3:o:lenovo:thinkpad_13_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad a275 firmware< 2020-07-10nvdUScpe:2.3:o:lenovo:thinkpad_a275_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad a285 firmware< 2020-07-10nvdUScpe:2.3:o:lenovo:thinkpad_a285_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad a475 firmware< 2020-07-10nvdUScpe:2.3:o:lenovo:thinkpad_a475_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad a485 firmware< 2020-07-10nvdUScpe:2.3:o:lenovo:thinkpad_a485_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad e14 firmware< 2020-07-10nvdUScpe:2.3:o:lenovo:thinkpad_e14_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad e15 firmware< 2020-07-10nvdUScpe:2.3:o:lenovo:thinkpad_e15_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad e455 firmware< 2020-07-10nvdUScpe:2.3:o:lenovo:thinkpad_e455_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad e460 firmware< 2020-07-10nvdUScpe:2.3:o:lenovo:thinkpad_e460_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad e465 firmware< 2020-07-10nvdUScpe:2.3:o:lenovo:thinkpad_e465_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad e470 firmware< 2020-07-10nvdUScpe:2.3:o:lenovo:thinkpad_e470_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad e475 firmware< 2020-07-10nvdUScpe:2.3:o:lenovo:thinkpad_e475_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad e480 firmware< 2020-07-10nvdUScpe:2.3:o:lenovo:thinkpad_e480_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad e485 firmware< 2020-07-10nvdUScpe:2.3:o:lenovo:thinkpad_e485_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad e490 firmware< 2020-07-10nvdUScpe:2.3:o:lenovo:thinkpad_e490_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad e490s firmware< 2020-07-10nvdUScpe:2.3:o:lenovo:thinkpad_e490s_firmware:*:*:*:*:*:*:*:*

showing 20 of 101

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2020-06-09modified 2026-06-17

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references (4)

External citations — patches, advisories, analysis.

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