Improper check for unusual conditions in Lenovo BIOS
Priority LOW 30CWE-754Published · Updated
Key facts
- Attack vector
- Physical
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
The BIOS tamper detection mechanism was not triggered in Lenovo ThinkPad T495s, X395, T495, A485, A285, A475, A275 which may allow for unauthorized access.
Why it matters now
EPSS 0.00327 25th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Lenovo | BIOS | various | — | No fix listed | CNA |
- BIOS VendorLenovo Affected various Fixed in — No fix listed CNA
CPE configurations NVD · 14
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:lenovo:thinkpad_t495s_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_t495s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_x395_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_x395:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_t495_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_t495:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_a485_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_a485:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_a285_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_a285:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
- cpe:2.3:o:lenovo:thinkpad_t495s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_t495s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_x395_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_x395:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_t495_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_t495:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_a485_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_a485:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_a285_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_a285:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
Show 4 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:lenovo:thinkpad_a475_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_a475:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_a275_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_a275:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
- cpe:2.3:o:lenovo:thinkpad_a475_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_a475:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_a275_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_a275:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-8334
- 2026-10-03 Alias added: GHSA-9x9m-j8v4-cx96
References
More Lenovo Thinkpad A275 Firmware vulnerabilities
- TI-2019-14200 Realtek Audio Drivers for Windows, as used on the Lenovo ThinkPad X1 Carbon 20A7, 20A8… CVSS 3.1HIGH 7.8
- TI-2019-13465 Incorrect parameter validation in the synaTee component of Synaptics WBF drivers using an… CVSS 3.1HIGH 7.8
- TI-2019-08001 There is a vulnerability with the Dolby DAX2 API system services in which a… CVSS 3.0MEDIUM 6.5
- TI-2020-06735 The BIOS tamper detection mechanism was not triggered in Lenovo ThinkPad A285, BIOS… CVSS 3.1MEDIUM 6.8
- TI-2020-06726 A potential vulnerability in the SMI callback function used in the Legacy SD driver in… CVSS 3.1MEDIUM 6.7
- TI-2020-06723 An internal shell was included in BIOS image in some ThinkPad models that could allow escalation of privilege. CVSS 3.1MEDIUM 6.8
Sources
- CVE-2020-8334 · CVE Program
- CVE-2020-8334 · NVD
- FIRST EPSS
- GHSA-9x9m-j8v4-cx96 · GitHub Advisory Database · CC BY 4.0
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