CVE-2020-8336

mediumpriority · track · 27EPSS 0.003 · 22 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.30% (22nd) EPSS

CVSS 4.6 · medium

Is it mine?

39 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

Lenovo implemented Intel CSME Anti-rollback ARB protections on some ThinkPad models to prevent roll back of CSME Firmware in flash.

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-501USLLM-inferred

affected products (39)

Products and version ranges known to be affected.

Lenovo BIOSall versionsenisa_euvdEU
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 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:*:*:*:*:*:*:*:*
lenovo thinkpad e590 firmware< 2020-07-10nvdUScpe:2.3:o:lenovo:thinkpad_e590_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad l13 1st gen firmware< 2020-07-10nvdUScpe:2.3:o:lenovo:thinkpad_l13_1st_gen_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad l1415 gen 1 firmware< 2020-07-10nvdUScpe:2.3:o:lenovo:thinkpad_l1415_gen_1_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad l390 yoga firmware< 2020-07-10nvdUScpe:2.3:o:lenovo:thinkpad_l390_yoga_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad l490 firmware< 2020-07-10nvdUScpe:2.3:o:lenovo:thinkpad_l490_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad l590 firmware< 2020-07-10nvdUScpe:2.3:o:lenovo:thinkpad_l590_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad p1 (20mx) firmware< n2eet47wnvdUScpe:2.3:o:lenovo:thinkpad_p1_\(20mx\)_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad p1 (20qx) firmware< n2oet44wnvdUScpe:2.3:o:lenovo:thinkpad_p1_\(20qx\)_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad p43s (20rx) firmware< n2iet88wnvdUScpe:2.3:o:lenovo:thinkpad_p43s_\(20rx\)_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad p52 (20mx) firmware< n2cet51w-1.34nvdUScpe:2.3:o:lenovo:thinkpad_p52_\(20mx\)_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad p53 (20qx) firmware< n2net37wnvdUScpe:2.3:o:lenovo:thinkpad_p53_\(20qx\)_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad p53s (20nx) firmware< n2iet88wnvdUScpe:2.3:o:lenovo:thinkpad_p53s_\(20nx\)_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad p72 (20mx) firmware< n2cet51wnvdUScpe:2.3:o:lenovo:thinkpad_p72_\(20mx\)_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad p73 (20qx) firmware< n2net37wnvdUScpe:2.3:o:lenovo:thinkpad_p73_\(20qx\)_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad r14 firmware< 2020-07-10nvdUScpe:2.3:o:lenovo:thinkpad_r14_firmware:*:*:*:*:*:*:*:*

showing 20 of 39

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

references (4)

External citations — patches, advisories, analysis.

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