CVE-2021-3970
What it is
A potential vulnerability in LenovoVariable SMI Handler due to insufficient validation in some Lenovo Notebook models BIOS may allow an attacker with local access and elevated privileges to execute arbitrary code.
At a glance
- Exploitability
- Can be exploited locally on the machine with an admin-level account. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 1.3% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 1.3% in the next 30 days (EPSS).
- Severity: 6.7 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 1.3% · EPSS, next 30 days
- Weakness
- CWE-20 · Improper input validation
- Record status
- Modified
Affected
- Lenovo Ideapad 3-14ada05 Firmware < e8cn33ww
- Lenovo Ideapad 3-14ada6 Firmware < hbcn21ww
- Lenovo Ideapad 3-14alc6 Firmware < glcn43ww
- Lenovo Ideapad 3-14are05 Firmware < dzcn42ww
- Lenovo Ideapad 3-15ada6 Firmware < hbcn21ww
- Lenovo Ideapad 3-15alc6 Firmware < glcn43ww
- Lenovo Ideapad 3-15are05 Firmware < dzcn42ww
- Lenovo Ideapad 3-15igl05 Firmware < dvcn23ww
Attack profile CVSS 3.1 · 6.7
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2021-3970.md and follow it. Check whether this project is affected by CVE-2021-3970. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://support.lenovo.com/us/en/product_security/LEN-73440
- https://support.lenovo.com/us/en/product_security/LEN-73440