BIOS Vulnerability in Lenovo ThinkPad L13 Gen 6 and L14 Gen 6 Models
CVE-2026-0421

7HIGH

Key Information:

Vendor

Lenovo
Status
Thinkpad L13 Gen 6 BiOS
Thinkpad L13 Gen 6 2 In 1 BiOS
Thinkpad L14 Gen 6 BiOS
Thinkpad L16 Gen 2 BiOS
Vendor
CVE Published:
14 January 2026

What is CVE-2026-0421?

A reported vulnerability in the BIOS of specific Lenovo ThinkPad models may lead to the unintended disabling of Secure Boot functionality. This issue arises when Secure Boot is configured to User Mode, potentially exposing systems to unauthorized modifications or attacks, despite the setting being activated in the BIOS setup. Users of affected models should consult Lenovo's security advisory for further details and recommended actions.

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Affected Version(s)

ThinkPad L13 Gen 6 2 in 1 BIOS 0 < 1.10

ThinkPad L13 Gen 6 BIOS 0 < 1.10

ThinkPad L14 Gen 6 BIOS 0 < 1.06

References

https://support.lenovo.com/us/en/product_security/LEN-210688

CVSS V4

Score:
7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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