Is CVE-2020-8341 in the CISA KEV catalog?

No. CVE-2020-8341 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-8341?

CVE-2020-8341 has a CVSS v3 base score of 2.4 (LOW).

What is the EPSS score for CVE-2020-8341?

CVE-2020-8341 has an EPSS score of 0.35% (27th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-8341?

Upgrade thinkpad t490 \(20nx\) firmware to n2iet90w or later. Fixes are available for 10 affected products.

CVE & CISA-KEV Catalog

CVE-2020-8341

LOW

2.4

CVSS v3

NVD

Description

In Lenovo systems, SMM BIOS Write Protection is used to prevent writes to SPI Flash. While this provides sufficient protection, an additional layer of protection is provided by SPI Protected Range Registers (PRx). After resuming from S3 sleep mode in various versions of BIOS for some Lenovo ThinkPad systems, the PRx is not set. This does not impact the SMM BIOS Write Protection, which keeps systems protected.

How to fix

Remediation Available

thinkpad t490 \(20nx\) firmwareNVD

Affected:< n2iet90wFixed in:n2iet90wCVE-2020-8341derived from NVD

thinkpad t490 \(20qx\) firmwareNVD

Affected:< n2iet90wFixed in:n2iet90wCVE-2020-8341derived from NVD

thinkpad t490 \(20rx\) firmwareNVD

Affected:< n2ret16wFixed in:n2ret16wCVE-2020-8341derived from NVD

thinkpad t490s \(20nx\) firmwareNVD

Affected:< n2jet89wFixed in:n2jet89wCVE-2020-8341derived from NVD

thinkpad t495 drift firmwareNVD

Affected:< 2020-08-30Fixed in:2020-08-30CVE-2020-8341derived from NVD

thinkpad t590 \(20nx\) firmwareNVD

Affected:< n2iet90wFixed in:n2iet90wCVE-2020-8341derived from NVD

thinkpad x1 carbon \(20qx\) firmwareNVD

Affected:< n2het54wFixed in:n2het54wCVE-2020-8341derived from NVD

thinkpad x1 yoga \(20qx\) firmwareNVD

Affected:< n2het54wFixed in:n2het54wCVE-2020-8341derived from NVD

thinkpad x390 \(20qx\) firmwareNVD

Affected:< n2jet89wFixed in:n2jet89wCVE-2020-8341derived from NVD

thinkpad x390 \(20sx\) firmwareNVD

Affected:< n2set18wFixed in:n2set18wCVE-2020-8341derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorPhysical

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityNone

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Exploit Intelligence

0.35%probability of exploitation in 30 days

27thpercentile

Low risk: more likely to be exploited than 27% of all known CVEs.

References

Vendor Advisory1

support.lenovo.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.