CVE-2020-8320 json
An internal shell was included in BIOS image in some ThinkPad models that could allow escalation of privilege.
published 2020-06-09 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-29187
- cvss
- 6.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 21%
- public exploits
- 0
- none known
Summary
An internal shell was included in BIOS image in some ThinkPad models that could allow escalation of privilege.
Patch / fix
- lenovo thinkpad_11e_yoga_gen_6_firmware 2020-07-10
- lenovo thinkpad_11e_firmware 2020-07-10
- lenovo thinkpad_yoga_11e_3rd_gen_firmware 2020-07-10
- lenovo thinkpad_yoga_11e_4th_gen_firmware 2020-07-10
- lenovo thinkpad_yoga_11e_5th_gen_firmware 2020-07-10
- lenovo thinkpad_13_2nd_gen_firmware 2020-07-10
- lenovo thinkpad_13_firmware 2020-07-10
- lenovo thinkpad_a275_firmware 2020-07-10
- lenovo thinkpad_a285_firmware 2020-07-10
- lenovo thinkpad_a475_firmware 2020-07-10
- lenovo thinkpad_a485_firmware 2020-07-10
- lenovo thinkpad_e14_firmware 2020-07-10
- lenovo thinkpad_e15_firmware 2020-07-10
- lenovo thinkpad_r14_firmware 2020-07-10
- lenovo thinkpad_s3_gen_2_firmware 2020-07-10
- lenovo thinkpad_e455_firmware 2020-07-10
- lenovo thinkpad_e555_firmware 2020-07-10
- lenovo thinkpad_e460_firmware 2020-07-10
- lenovo thinkpad_e560_firmware 2020-07-10
- lenovo thinkpad_e465_firmware 2020-07-10
Exploit prediction
0.28% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.4 | CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 6.8 | CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P |
Affected products
- Lenovo BIOS
Classification
References
-
support.lenovo.com
/us/en/product_security/LEN-30042
vendor-advisory
Sources
- CVE List CVE-2020-8320
- NVD CVE-2020-8320
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