Home/CVE/An SMI handler input validation vulnerability in the BIOS of some ThinkPad models could allow an attacker with local acc
CVE

CVE-2022-4574

An SMI handler input validation vulnerability in the BIOS of some ThinkPad models could allow an attacker with local acc

An SMI handler input validation vulnerability in the BIOS of some ThinkPad models could allow an attacker with local access and elevated privileges to execute arbitrary code.

MEDIUM · CVSS 6.7 EPSS 0.00022
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-20Improper Input Validation
▤

Affected Products & Versions

54
lenovo thinkpad x13 yoga gen 2 firmware< 1.40
lenovo thinkpad x13 yoga gen 1 firmware< 1.45
lenovo thinkpad x13 gen 3 firmware< 1.33
lenovo thinkpad x13 gen 2 firmware< 1.51
lenovo thinkpad x13 firmware< 1.26
lenovo thinkpad x1 yoga 7th gen firmware< 1.37
lenovo thinkpad x1 yoga 6th gen firmware< 1.59
lenovo thinkpad x1 yoga 5th gen firmware< 1.30
▣

Scoring & Timeline

6.7
MEDIUM · CVSS v3.1 · psirt@lenovo.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD30 Oct 2023 · 03:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://support.lenovo.com/us/en/product_security/LEN-106014Vendor Advisory
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