Vulnerability · Published Apr 22, 2022 · Assigned by lenovo
CVE-2021-3971
Medium 6.7
In plain English
A medium-severity security flaw in Notebook BIOS from Lenovo. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 69% of all known vulnerabilities).
Severity (CVSS 3.1)6.7Medium
Exploit odds (30 days)1.2%top 30.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A potential vulnerability by a driver used during older manufacturing processes on some consumer Lenovo Notebook devices that was mistakenly included in the BIOS image could allow an attacker with elevated privileges to modify firmware protection region by modifying an NVRAM variable.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Lenovo | Notebook BIOS | various |
Weakness: CWE-489 · Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
References
- https://support.lenovo.com/us/en/product_security/LEN-73440 x_refsource_MISC