CVE-2021-3897: ibm nextscale_fan_power_controller_firmware
CVSS: 9.8v3.1CriticalModified
Published 22-04-2022Last modified 03-08-2024
Vulnerability summary
CVE-2021-3897 is a critical (CVSS 9.8) vulnerability in ibm nextscale_fan_power_controller_firmware. EPSS estimates a 1.30% chance of exploitation in the next 30 days, higher than 69.9% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)EPSS score
1.30%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 22-04-2022PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
3 scores · 2 sources · 2 versionsCritical 9.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 2 agree
- NVDNIST9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
High 7.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
1.30%
Chance of exploitation in the next 30 days
Percentile
70%
Versus all other CVEs
30-day change
0.00 pp
From 1.30% on 20-09-2026
20-09-202620-10-2026
EPSS score1.30%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Lenovo6 products
- fan power controller2 (fpc2)various
- lenovo system management module (smm)various
- nextscale_n1200_enclosure_firmware< fhet50b-2.90
- thinkagile_hx_enclosure_certified_node_firmware< tesm28b-1.21
- thinkagile_vx_enclosure_firmware< tesm28b-1.21
Ibm1 product
- nextscale_fan_power_controller_firmware< 44a-3.70
2 vendors · 7 products