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01 Record

CVE-2020-8321

A potential vulnerability in the SMI callback function used in the System Lock Preinstallation driver in some Lenovo Notebook and ThinkStation models may allow arbitrary code execution.

MediumPUBLISHEDCNA: lenovo
CNA base score6.4 CVSS v3.xCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

02 Description

A potential vulnerability in the SMI callback function used in the System Lock Preinstallation driver in some Lenovo Notebook and ThinkStation models may allow arbitrary code execution.

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
0.34% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 27.8% of scored records. A rank, not a probability.
NVD base score
6.7 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2020-06-09 19:50Z6 YR AGO
Last updated
2024-09-17 00:35Z2 YR AGO
Reserved
2020-01-28
Assigning CNA
lenovo
Record state
PUBLISHED
Severity
Medium (CVSS 6.4)
CNA CVSS vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Weaknesses
No CWE assigned
Data version
5.1
Document digest
388c6121be8b467dd4531ecb769dbeda5ab45f1c84002ec3a4dd09770e88f22b

05 Affected products

VendorProductVersionsPlatforms
LenovoBIOSvarious—

06 References

07 Remediation

Update system firmware to the version (or newer) indicated for your model in the Product Impact section of LEN-30042.