CVE-2026-0421

mediumpriority · track · 0EPSS 0.002 · 6 %ileDEEU

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.16% (6th) EPSS

CVSS 6.5 · medium

Is it mine?

9 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · cert_bund

EPSS · scored 2026-10-28

A potential vulnerability was reported in the BIOS of L13 Gen 6, L13 Gen 6 2-in-1, L14 Gen 6, and L16 Gen 2 ThinkPads which could result in Secure Boot being disabled even when configured as “On” in the BIOS setup menu. This issue only affects systems where Secure Boot is set to User Mode.

cvss

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

7.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4–7

v3.16.5mediumCVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:Hsecondary · psirt@lenovo.comexploitability 0.6 · impact 5.9

v4.07highCVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:Nsecondary · ENISA EU

v4.07highCVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · psirt@lenovo.com

v4.04mediumCVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · 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-252US

affected products (9)

Products and version ranges known to be affected.

Lenovo BIOSall versionscert_bundDEcpe:/h:lenovo:bios:-
Lenovo BIOS L13 Gen 6all versionscert_bundDEcpe:/h:lenovo:bios:l13_gen_6
Lenovo BIOS L13 Gen 6 2-in-1all versionscert_bundDEcpe:/h:lenovo:bios:l13_gen_6_2-in-1
Lenovo BIOS L14 Gen 6all versionscert_bundDEcpe:/h:lenovo:bios:l14_gen_6
Lenovo BIOS L16 Gen 2 ThinkPadsall versionscert_bundDEcpe:/h:lenovo:bios:l16_gen_2_thinkpads
Lenovo ThinkPad L13 Gen 6 2 in 1 BIOS0 → 1.10enisa_euvdEU
Lenovo ThinkPad L13 Gen 6 BIOS0 → 1.10enisa_euvdEU
Lenovo ThinkPad L14 Gen 6 BIOS0 → 1.06enisa_euvdEU
Lenovo ThinkPad L16 Gen 2 BIOS0 → 1.06enisa_euvdEU

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-0134Lenovo BIOS: Mehrere SchwachstellenDeutsch2026-01-15csaf · cert_bundDE
Ein lokaler Angreifer kann mehrere Schwachstellen in Lenovo BIOS ausnutzen, um beliebigen Code auszuführen, einen Denial-of-Service-Zustand zu verursachen, Daten zu verändern oder Secure-Boot-Schutzmaßnahmen zu umgehen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund NVD CVE.org MITRE

published 2026-01-14modified 2026-06-17

references (4)

External citations — patches, advisories, analysis.

scry

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