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CVE-2021-3897

CRITICAL
Published 2022-04-22T21:10:13
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Expert Analysis

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CVSS Score

V3.1
9.8
/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.004
probability
of exploitation in the wild

There is a 0.4% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.576
Higher than 57.6% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Lenovo

Fan Power Controller2 (FPC2)

Affected Versions:

various
Lenovo

Lenovo System Management Module (SMM)

Affected Versions:

various

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed CRITICAL

GHSA-hp9h-gmr9-r5h4

Advisory Details

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 Scoring

CVSS Score

9.0

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2021-3897
WEB https://support.lenovo.com/us/en/product_security/LEN-72615

Advisory provided by GitHub Security Advisory Database. Published: April 23, 2022, Modified: May 10, 2022

References

https://support.lenovo.com/us/en/product_security/LEN-72615
Published: 2022-04-22T21:10:13
Last Modified: 2024-08-03T17:09:09.641Z
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