CVE-2021-3843
MEDIUMCVSS 6.7/10EPSS 0.27%
Last modified
CVE-2021-3843 is a medium-severity vulnerability rated 6.7/10 on the CVSS scale. A potential vulnerability in the SMI function to access EEPROM in some ThinkPad models may allow an attacker with local access and elevated privileges to execute arbitrary code.. EPSS estimates a 0.27% chance of exploitation in the next 30 days.
Description
A potential vulnerability in the SMI function to access EEPROM in some ThinkPad models may allow an attacker with local access and elevated privileges to execute arbitrary code.
Metrics
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Lenovo | Thinkpad 11e 3rd Gen Firmware | <= 1.22 |
| Lenovo | Thinkpad 11e 3rd Gen Firmware | <= 1.29 |
| Lenovo | Thinkpad 11e 4th Gen I3 Firmware | <= 1.22 |
| Lenovo | Thinkpad 11e 4th Gen I7 Firmware | <= 1.22 |
| Lenovo | Thinkpad 11e 4th Gen I5 Firmware | <= 1.22 |
| Lenovo | Thinkpad 11e 4th Gen Celeron Firmware | <= 1.27 |
| Lenovo | Thinkpad 11e Yoga Gen 6 Firmware | <= 1.12 |
| Lenovo | Thinkpad 13 Gen 2 Firmware | <= 1.29 |
| Lenovo | Thinkpad L13 Firmware | <= 1.31 |
| Lenovo | Thinkpad L13 Gen 2 Firmware | <= 1.11 |
| Lenovo | Thinkpad L13 Gen 2 Firmware | <= 1.08 |
| Lenovo | Thinkpad L13 Yoga Firmware | <= 1.31 |
| Lenovo | Thinkpad L13 Yoga Gen 2 Firmware | <= 1.11 |
| Lenovo | Thinkpad L13 Yoga Gen 2 Firmware | <= 1.08 |
| Lenovo | Thinkpad L14 Gen 1 Firmware | < 1.15 |
| Lenovo | Thinkpad L14 Firmware | < 1.20.1.17 |
| Lenovo | Thinkpad L15 Gen 1 Firmware | < 1.15 |
| Lenovo | Thinkpad L15 Firmware | < 1.20.1.17 |
| Lenovo | Thinkpad L380 Firmware | <= 1.26 |
| Lenovo | Thinkpad L380 Yoga Firmware | <= 1.26 |
| Lenovo | Thinkpad L390 Yoga Firmware | <= 1.35 |
| Lenovo | Thinkpad L390 Firmware | <= 1.35 |
| Lenovo | Thinkpad S5 2nd Gen Firmware | <= 1.28 |
| Lenovo | Thinkpad T460 Firmware | <= 1.43.1.11 |
| Lenovo | Thinkpad S2 Gen 6 Firmware | <= 2021-09-30 |
| Lenovo | Thinkpad S2 Yoga Gen 6 Firmware | <= 2021-09-30 |
| Lenovo | Thinkpad X12 Detachable Gen 1 Firmware | < 1.16 |
| Lenovo | Thinkpad X260 Firmware | <= 1.47\/1.15 |
| Lenovo | Thinkpad X380 Yoga Firmware | <= 1.34 |
| Lenovo | Thinkpad X390 Yoga Firmware | < n2let87w |
| Lenovo | Thinkpad 11e 5th Gen Firmware | <= 1.13 |
| Lenovo | Thinkpad X1 Fold Gen 1 Firmware | < n2pet50w |
References
- https://support.lenovo.com/us/en/product_security/LEN-72619Vendor Advisory
- https://support.lenovo.com/us/en/product_security/LEN-72619Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-3843?
A potential vulnerability in the SMI function to access EEPROM in some ThinkPad models may allow an attacker with local access and elevated privileges to execute arbitrary code.
How severe is CVE-2021-3843?
CVE-2021-3843 has a CVSS score of 6.7/10 (MEDIUM severity). The EPSS model estimates a 0.27% probability of exploitation in the next 30 days.
How do I fix CVE-2021-3843?
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.
Are you affected by CVE-2021-3843?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST