CVE-2020-8336: Lenovo BIOS

Lenovo implemented Intel CSME Anti-rollback ARB protections on some ThinkPad models to prevent roll back of CSME Firmware in flash.

CVSS 6.4 MediumEPSS 0.0030 · 22nd percentile

Published by the CVE Program (CNA: lenovo) at 9 Jun 2020, 19:50 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Lenovo	BIOS	affected various

Identifiers

CVE-2020-8336

CNA

lenovo

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
6.4	Medium	3.1	CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	CNA (lenovo)

CISA KEV Not listed.
EPSS 0.0030, the 22nd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 9 Jun 2020. New records show when each source confirmed them.

Sources

References from the CNA

support.lenovo.com/us/en/product_security/LEN-30042

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.