CVE-2020-8341

2.4 LOW 0.3% exploit odds Fix listed

What it is

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.

At a glance

Exploitability: Can be exploited with physical access without logging in. Limited direct impact.
Exploit odds: 0.3% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2020-09-01 22:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 03:26 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.3% in the next 30 days (EPSS).
Severity: 2.4 LOW (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2020-09-01 22:15 UTC
Last modified: 2026-06-17 03:26 UTC
Exploit probability: 0.3% · EPSS, next 30 days
Record status: Modified

Affected

Lenovo Thinkpad t490 \(20nx\) Firmware < n2iet90w
Lenovo Thinkpad t490 \(20qx\) Firmware < n2iet90w
Lenovo Thinkpad t490 \(20rx\) Firmware < n2ret16w
Lenovo Thinkpad t490s \(20nx\) Firmware < n2jet89w
Lenovo Thinkpad t495 Drift Firmware < 2020-08-30
Lenovo Thinkpad t590 \(20nx\) Firmware < n2iet90w
Lenovo Thinkpad x1 Carbon \(20qx\) Firmware < n2het54w
Lenovo Thinkpad x1 Yoga \(20qx\) Firmware < n2het54w

Attack profile CVSS 3.1 · 2.4

Attack vector: Physical
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: Low
Availability: None

Raw vector

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

Is it in your code?

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Fix and advisories

References

NVD record · CVE.org record