CVE-2020-8336
Lenovo implemented Intel CSME Anti-rollback ARB protections on some ThinkPad models to prevent...
Lenovo implemented Intel CSME Anti-rollback ARB protections on some ThinkPad models to prevent roll back of CSME Firmware in flash.
Attack profile
How easy it is to exploit
- Attack vector
- Physical
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Lenovo implemented Intel CSME Anti-rollback ARB protections on some ThinkPad models to prevent roll back of CSME Firmware in flash.
- Record
CVE-2020-8336- CVSS 3.1
- 6.4 Medium
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
EUVDEUVD-2020-29203
Lenovo implemented Intel CSME Anti-rollback ARB protections on some ThinkPad models to prevent roll back of CSME Firmware in flash.
- Record
EUVD-2020-29203- CVSS 3.1
- 6.4 Medium
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-rmxg-p4v2-9f92 No score
Lenovo implemented Intel CSME Anti-rollback ARB protections on some ThinkPad models to prevent...
Lenovo implemented Intel CSME Anti-rollback ARB protections on some ThinkPad models to prevent roll back of CSME Firmware in flash.
- Record
GHSA-rmxg-p4v2-9f92- Updated
- 2026-11-02
NVD
Lenovo implemented Intel CSME Anti-rollback ARB protections on some ThinkPad models to prevent roll back of CSME Firmware in flash.
- Record
CVE-2020-8336- CVSS 3.1
- 6.4 Medium
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 4.6 Medium
AV:L/AC:L/Au:N/C:P/I:P/A:P - Updated
- 2026-11-02
Affected products
- lenovo bios
- lenovo thinkpad e14 firmware
- lenovo thinkpad e15 firmware
- lenovo thinkpad e490 firmware
- lenovo thinkpad e490s firmware
- lenovo thinkpad e590 firmware
- lenovo thinkpad l13 1st gen firmware
- lenovo thinkpad l1415 gen 1 firmware
- lenovo thinkpad l390 yoga firmware
- lenovo thinkpad l490 firmware
- lenovo thinkpad l590 firmware
- lenovo thinkpad p1 \(20mx\) firmware
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- lenovo thinkpad p1 \(20qx\) firmware
- lenovo thinkpad p43s \(20rx\) firmware
- lenovo thinkpad p52 \(20mx\) firmware
- lenovo thinkpad p53 \(20qx\) firmware
- lenovo thinkpad p53s \(20nx\) firmware
- lenovo thinkpad p72 \(20mx\) firmware
- lenovo thinkpad p73 \(20qx\) firmware
- lenovo thinkpad r14 firmware
- lenovo thinkpad r490 firmware
- lenovo thinkpad r590 firmware
- lenovo thinkpad s2 yoga 4th gen firmware
- lenovo thinkpad s3 firmware
- lenovo thinkpad s3 gen 2 firmware
- lenovo thinkpad t490 \(20nx\) firmware
- lenovo thinkpad t490 \(20qx\) firmware
- lenovo thinkpad t490 \(20rx\) firmware
- lenovo thinkpad t490s \(20nx\) firmware
- lenovo thinkpad t590 \(20nx\) firmware
- lenovo thinkpad x1 carbon \(20qx\) firmware
- lenovo thinkpad x1 carbon \(20rx\) firmware
- lenovo thinkpad x1 extreme \(20mx\) firmware
- lenovo thinkpad x1 extreme \(20qx\) firmware
- lenovo thinkpad x1 yoga \(20qx\) firmware
- lenovo thinkpad x1 yoga \(20sx\) firmware
- lenovo thinkpad x390 \(20qx\) firmware
- lenovo thinkpad x390 \(20sx\) firmware
- lenovo thinkpad x390 yoga firmware
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-8336 is a medium vulnerability (CVSS 6.4) in Lenovo Bios, published June 9, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.30%, the 22nd percentile. No source names a fixed version.