CVE-2020-8341

LOW

2.4

CVSS Score

Published: September 1, 2020 at 09:30 PM UTC

Updated: June 17, 2026 at 03:26 AM UTC

21 products affected across 1 vendorThinkPad X1 Yoga (20qx ) FirmwareThinkPad T490 (20rx ) FirmwareThinkPad T490 (20nx ) Firmware

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Severity

LOW2.4

Exploit prediction

EPSS 0.3%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

ThinkPad T490 (20nx ) Firmware · Lenovo

95%

v < n2iet90w

Affected range stops below n2iet90w, so it looks safe — our inference, not a vendor statement

lenovo-thinkpad-t490-20nx (same device)

ThinkPad T490 (20qx ) Firmware · Lenovo

95%

v < n2iet90w

Affected range stops below n2iet90w, so it looks safe — our inference, not a vendor statement

lenovo-thinkpad-t490-20qx (same device)

ThinkPad T490 (20rx ) Firmware · Lenovo

95%

v < n2ret16w

Affected range stops below n2ret16w, so it looks safe — our inference, not a vendor statement

lenovo-thinkpad-t490-20rx (same device)

ThinkPad T490S (20nx ) Firmware · Lenovo

95%

v < n2jet89w

Affected range stops below n2jet89w, so it looks safe — our inference, not a vendor statement

lenovo-thinkpad-t490s-20nx (same device)

ThinkPad T495 Drift Firmware · Lenovo

95%

v < 2020-08-30

Affected range stops below 2020-08-30, so it looks safe — our inference, not a vendor statement

lenovo-thinkpad-t495-drift (same device)

ThinkPad T590 (20nx ) Firmware · Lenovo

95%

v < n2iet90w

Affected range stops below n2iet90w, so it looks safe — our inference, not a vendor statement

lenovo-thinkpad-t590-20nx (same device)

ThinkPad X1 Carbon (20qx ) Firmware · Lenovo

95%

v < n2het54w

Affected range stops below n2het54w, so it looks safe — our inference, not a vendor statement

lenovo-thinkpad-x1-carbon-20qx (same device)

ThinkPad X1 Yoga (20qx ) Firmware · Lenovo

95%

v < n2het54w

Affected range stops below n2het54w, so it looks safe — our inference, not a vendor statement

lenovo-thinkpad-x1-yoga-20qx (same device)

ThinkPad X390 (20qx ) Firmware · Lenovo

95%

v < n2jet89w

Affected range stops below n2jet89w, so it looks safe — our inference, not a vendor statement

lenovo-thinkpad-x390-20qx (same device)

ThinkPad X390 (20sx ) Firmware · Lenovo

95%

v < n2set18w

Affected range stops below n2set18w, so it looks safe — our inference, not a vendor statement

lenovo-thinkpad-x390-20sx (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

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

References (1)

x_refsource_MISCVendor Advisory

Source: [email protected]

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

CVSS

2.4LOW[email protected]

Attack Vector: PHYSICAL
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: LOW
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

NVD-CWE-noinfo

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