MEDIUM
CVE-2020-8320
CWE-489Published: June 9, 2020· Updated: Jun 17, 2026
6.8
CVSS v3.1
Official Description
An internal shell was included in BIOS image in some ThinkPad models that could allow escalation of privilege.
Technical Analysis
CVE-2020-8320 requires local access, meaning attackers must already have a foothold on the target system.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 6.8.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorPhysical
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Vendors & Products
Lenovo200 product(s)
thinkpad 11e yoga gen 6 firmwarethinkpad 11e yoga gen 6thinkpad 11e firmwarethinkpad 11ethinkpad yoga 11e 3rd gen firmwarethinkpad yoga 11e 3rd genthinkpad yoga 11e 4th gen firmwarethinkpad yoga 11e 4th genthinkpad yoga 11e 5th gen firmwarethinkpad yoga 11e 5th genthinkpad 13 2nd gen firmwarethinkpad 13 2nd gen+188
Source: NVD CPE · 200 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (2)
→
https://support.lenovo.com/us/en/product_security/LEN-30042Vendor Advisory
→
https://support.lenovo.com/us/en/product_security/LEN-30042Vendor Advisory
Quick Facts
CVE IDCVE-2020-8320
CVSS Score6.8 / 10
SeverityMEDIUM
WeaknessCWE-489
CISA KEVNo
Affected1 vendor(s)
PublishedJun 9, 2020
Related CVEs (CWE-489)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2020-8320 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.