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Vulnerability record · CVE-2020-8335 · published 1 September 2020

CVE-2020-8335: Lenovo thinkpad a275 firmware vulnerability

Lenovo · Thinkpad A275 Firmware

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.

6.8 CVSS 3.1 Medium EPSS 0.31% · top 77.3%
6.8CVSS 3.1 base score, v2 4.6
0.31%EPSS exploitation probability, 30 days
NoNot in CISA KEV
8Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

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.

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

Affected products

8 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-8335), CISA KEV, FIRST EPSS (scores of 2026-10-17). This page is refreshed as NVD updates the record.