CVE-2021-3453

lowpriority · track · 18EPSS 0.002 · 14 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.24% (14th) EPSS

CVSS 2.1 · low

Is it mine?

22 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

Some Lenovo Notebook, ThinkPad, and Lenovo Desktop systems have BIOS modules unprotected by Intel Boot Guard that could allow an attacker with physical access the ability to write to the SPI flash storage.

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⚠ sources disagree · low–medium · 2.1–6.8

v2.02.1lowAV:L/AC:L/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 2.9

v3.14.6mediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nprimary · NVD / NIST USexploitability 0.9 · impact 3.6

v3.16.8mediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.16.8mediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · psirt@lenovo.comexploitability 0.9 · impact 5.9

v3.14.2mediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-693US

affected products (22)

Products and version ranges known to be affected.

Lenovo BIOSall versionsenisa_euvdEU
lenovo 730s-13iml firmwareall versionsnvdUScpe:2.3:o:lenovo:730s-13iml_firmware:*:*:*:*:*:*:*:*
lenovo ideacentre aio 5-24imb05 firmware< 2021-09-30nvdUScpe:2.3:o:lenovo:ideacentre_aio_5-24imb05_firmware:*:*:*:*:*:*:*:*
lenovo ideacentre aio 5-74imb05 firmware< 2021-09-30nvdUScpe:2.3:o:lenovo:ideacentre_aio_5-74imb05_firmware:*:*:*:*:*:*:*:*
lenovo ideapad 1-11igl05 firmwareall versionsnvdUScpe:2.3:o:lenovo:ideapad_1-11igl05_firmware:*:*:*:*:*:*:*:*
lenovo ideapad 1-14igl05 firmwareall versionsnvdUScpe:2.3:o:lenovo:ideapad_1-14igl05_firmware:*:*:*:*:*:*:*:*
lenovo ideapad s940-14iil firmwareall versionsnvdUScpe:2.3:o:lenovo:ideapad_s940-14iil_firmware:*:*:*:*:*:*:*:*
lenovo ideapad s940-14iwl firmwareall versionsnvdUScpe:2.3:o:lenovo:ideapad_s940-14iwl_firmware:*:*:*:*:*:*:*:*
lenovo ideapad slim 1-11ast-05 firmwareall versionsnvdUScpe:2.3:o:lenovo:ideapad_slim_1-11ast-05_firmware:*:*:*:*:*:*:*:*
lenovo ideapad slim 1-14ast-05 firmwareall versionsnvdUScpe:2.3:o:lenovo:ideapad_slim_1-14ast-05_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad helix firmware= n17etb4wnvdUScpe:2.3:o:lenovo:thinkpad_helix_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad t550 firmware= n11et53wnvdUScpe:2.3:o:lenovo:thinkpad_t550_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad w550s firmware= n11et53wnvdUScpe:2.3:o:lenovo:thinkpad_w550s_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad x1 carbon 3rd gen firmware= n14et55wnvdUScpe:2.3:o:lenovo:thinkpad_x1_carbon_3rd_gen_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad x250 firmware= n10et62wnvdUScpe:2.3:o:lenovo:thinkpad_x250_firmware:*:*:*:*:*:*:*:*
lenovo thinkpad yoga 15 firmware= n19et65wnvdUScpe:2.3:o:lenovo:thinkpad_yoga_15_firmware:*:*:*:*:*:*:*:*
lenovo v130-15igm firmwareall versionsnvdUScpe:2.3:o:lenovo:v130-15igm_firmware:*:*:*:*:*:*:*:*
lenovo v330-15ikb firmwareall versionsnvdUScpe:2.3:o:lenovo:v330-15ikb_firmware:*:*:*:*:*:*:*:*
lenovo v330-15isk firmwareall versionsnvdUScpe:2.3:o:lenovo:v330-15isk_firmware:*:*:*:*:*:*:*:*
lenovo yoga s730-13iml firmwareall versionsnvdUScpe:2.3:o:lenovo:yoga_s730-13iml_firmware:*:*:*:*:*:*:*:*

showing 20 of 22

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 2021-07-16modified 2026-06-17

references (3)

External citations — patches, advisories, analysis.

scry

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