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CVE Vulnerability Details :
CVE-2026-0421
PUBLISHED
More InfoOfficial Page
Assigner-lenovo
Assigner Org ID-da227ddf-6e25-4b41-b023-0f976dcaca4b
View Known Exploited Vulnerability (KEV) details
Published At-14 Jan, 2026 | 22:18
Updated At-16 Jan, 2026 | 04:55
Rejected At-
▼CVE Numbering Authority (CNA)

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.

Affected Products
Vendor
Lenovo Group LimitedLenovo
Product
ThinkPad L13 Gen 6 BIOS
Default Status
unaffected
Versions
Affected
  • From 0 before 1.10 (custom)
Vendor
Lenovo Group LimitedLenovo
Product
ThinkPad L13 Gen 6 2 in 1 BIOS
Default Status
unaffected
Versions
Affected
  • From 0 before 1.10 (custom)
Vendor
Lenovo Group LimitedLenovo
Product
ThinkPad L14 Gen 6 BIOS
Default Status
unaffected
Versions
Affected
  • From 0 before 1.06 (custom)
Vendor
Lenovo Group LimitedLenovo
Product
ThinkPad L16 Gen 2 BIOS
Default Status
unaffected
Versions
Affected
  • From 0 before 1.06 (custom)
Problem Types
TypeCWE IDDescription
CWECWE-252CWE-252: Unchecked Return Value
Type: CWE
CWE ID: CWE-252
Description: CWE-252: Unchecked Return Value
Metrics
VersionBase scoreBase severityVector
4.07.0HIGH
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
3.16.5MEDIUM
CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
Version: 4.0
Base score: 7.0
Base severity: HIGH
Vector:
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Update to the version (or higher) as recommended in the Product Impact section in the advisory:  https://support.lenovo.com/us/en/product_security/LEN-210688

Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://support.lenovo.com/us/en/product_security/LEN-210688
N/A
Hyperlink: https://support.lenovo.com/us/en/product_security/LEN-210688
Resource: N/A
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found