CVE-2020-8335

MEDIUM

6.8

CVSS Score

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

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

18 products affected across 1 vendorThinkPad A275 FirmwareThinkPad A475 FirmwareThinkPad X395 Firmware

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Severity

MEDIUM6.8

Exploit prediction

EPSS 0.3%

Description

The BIOS tamper detection mechanism was not triggered in Lenovo ThinkPad A285, BIOS versions up to r0xuj70w; A485, BIOS versions up to r0wuj65w; T495 BIOS versions up to r12uj55w; T495s/X395, BIOS versions up to r13uj47w, while the emergency-reset button is pressed which may allow for unauthorized access.

Affected

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

ThinkPad A275 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-a275 (same device)

ThinkPad A285 Firmware · Lenovo

95%

v < 2020-08-30v < r0xuj70w

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

Affected range stops below r0xuj70w, so it looks safe — our inference, not a vendor statement

lenovo-thinkpad-a285 (same device)

ThinkPad A475 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-a475 (same device)

ThinkPad A485 Firmware · Lenovo

95%

v < 2020-08-30v < r0wuj65w

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

Affected range stops below r0wuj65w, so it looks safe — our inference, not a vendor statement

lenovo-thinkpad-a485 (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 T495S Jazz 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-t495s-jazz (same device)

ThinkPad X1 Carbon (20bx ) Firmware · Lenovo

95%

v < n14et54w

Affected range stops below n14et54w, so it looks safe — our inference, not a vendor statement

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

ThinkPad X395 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-x395 (same device)

ThinkPad T495 · Lenovo

60%

v < r12uj55w

Affected range stops below r12uj55w, so it looks safe — our inference, not a vendor statement

ThinkPad T495s · Lenovo

60%

v < r13uj47w

Affected range stops below r13uj47w, so it looks safe — our inference, not a vendor statement

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

6.8MEDIUM[email protected]

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

Vector?

Quick Info

StatusMODIFIED

CWE

NVD-CWE-noinfo

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