Privilege escalation in Lenovo Bios

CVE-2020-8320

An internal shell was included in BIOS image in some ThinkPad models that could allow escalation of privilege.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (20.9th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 20.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2020-8320: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2020-8320?
CVE-2020-8320 is a medium-severity vulnerability in Lenovo Bios, classified under Active Debug Code. CVSS score: 6.4/10. Published 2020-06-09.
How severe is CVE-2020-8320?
Medium severity. CVSS v3 base score is 6.4 out of 10.