Vulnerability · Published Apr 22, 2022 · Assigned by lenovo
CVE-2021-3897
Critical 9.8
In plain English
A critical-severity authentication bypass in Fan Power Controller2 (FPC2) from Lenovo. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.3% (higher than 70% of all known vulnerabilities).
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)1.3%top 29.5% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
An authentication bypass vulnerability was discovered in an internal service of the Lenovo Fan Power Controller2 (FPC2) and Lenovo System Management Module (SMM) firmware during an that could allow an unauthenticated attacker to execute commands on the SMM and FPC2. SMM2 is not affected.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Lenovo | Fan Power Controller2 (FPC2) | various |
| Lenovo | Lenovo System Management Module (SMM) | various |
Weakness: CWE-288 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://support.lenovo.com/us/en/product_security/LEN-72615 x_refsource_MISC