CVE-2020-8336
MEDIUMCVSS 6.8/10EPSS 0.29%
Last modified
CVE-2020-8336 is a medium-severity vulnerability rated 6.8/10 on the CVSS scale. Lenovo implemented Intel CSME Anti-rollback ARB protections on some ThinkPad models to prevent roll back of CSME Firmware in flash.. EPSS estimates a 0.29% chance of exploitation in the next 30 days.
Description
Lenovo implemented Intel CSME Anti-rollback ARB protections on some ThinkPad models to prevent roll back of CSME Firmware in flash.
Metrics
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| 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 E490s Firmware | < 2020-07-10 |
| Lenovo | Thinkpad S3 Firmware | < 2020-07-10 |
| Lenovo | Thinkpad E490 Firmware | < 2020-07-10 |
| Lenovo | Thinkpad E590 Firmware | < 2020-07-10 |
| Lenovo | Thinkpad R490 Firmware | < 2020-07-10 |
| Lenovo | Thinkpad R590 Firmware | < 2020-07-10 |
| Lenovo | Thinkpad L13 1st Gen Firmware | < 2020-07-10 |
| Lenovo | Thinkpad L1415 Gen 1 Firmware | < 2020-07-10 |
| Lenovo | Thinkpad L390 Yoga Firmware | < 2020-07-10 |
| Lenovo | Thinkpad S2 Yoga 4th Gen Firmware | < 2020-07-10 |
| Lenovo | Thinkpad L490 Firmware | < 2020-07-10 |
| Lenovo | Thinkpad L590 Firmware | < 2020-07-10 |
| Lenovo | Thinkpad P1 \(20mx\) Firmware | < n2eet47w |
| Lenovo | Thinkpad P1 \(20qx\) Firmware | < n2oet44w |
| Lenovo | Thinkpad P43s \(20rx\) Firmware | < n2iet88w |
| Lenovo | Thinkpad P52 \(20mx\) Firmware | < n2cet51w-1.34 |
| Lenovo | Thinkpad P53 \(20qx\) Firmware | < n2net37w |
| Lenovo | Thinkpad P53s \(20nx\) Firmware | < n2iet88w |
| Lenovo | Thinkpad P72 \(20mx\) Firmware | < n2cet51w |
| Lenovo | Thinkpad P73 \(20qx\) Firmware | < n2net37w |
| Lenovo | Thinkpad T490 \(20nx\) Firmware | < n2iet88w |
| Lenovo | Thinkpad T490 \(20qx\) Firmware | < n2iet88w |
| Lenovo | Thinkpad T490 \(20rx\) Firmware | < n2iet88w |
| Lenovo | Thinkpad T490s \(20nx\) Firmware | < n2jet87w |
| Lenovo | Thinkpad T590 \(20nx\) Firmware | < n2iet88w |
| Lenovo | Thinkpad X1 Carbon \(20qx\) Firmware | < n2het47w |
| Lenovo | Thinkpad X1 Carbon \(20rx\) Firmware | < n2het47w |
| Lenovo | Thinkpad X1 Extreme \(20mx\) Firmware | < n2eet47w |
| Lenovo | Thinkpad X1 Extreme \(20qx\) Firmware | < n2oet44w |
| Lenovo | Thinkpad X1 Yoga \(20qx\) Firmware | < n2het47w |
| Lenovo | Thinkpad X1 Yoga \(20sx\) Firmware | < n2het47w |
| Lenovo | Thinkpad X390 \(20qx\) Firmware | < n2jet87w |
| Lenovo | Thinkpad X390 \(20sx\) Firmware | < n2set18w |
| Lenovo | Thinkpad X390 Yoga Firmware | < n2let74w |
References
- https://support.lenovo.com/us/en/product_security/LEN-30042Vendor Advisory
- https://support.lenovo.com/us/en/product_security/LEN-30042Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-8336?
Lenovo implemented Intel CSME Anti-rollback ARB protections on some ThinkPad models to prevent roll back of CSME Firmware in flash.
How severe is CVE-2020-8336?
CVE-2020-8336 has a CVSS score of 6.8/10 (MEDIUM severity). The EPSS model estimates a 0.29% probability of exploitation in the next 30 days.
How do I fix CVE-2020-8336?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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Are you affected by CVE-2020-8336?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST