CVE-2021-3897CWE-288

An authentication bypass vulnerability was discovered in an internal service of the Lenovo Fan Power Controller2 (FPC2) and Lenovo System Management Module…

Critical · published April 22, 2022

CVSS v3.1
9.8
EPSS
1%
Percentile
70.1
In the wild
Unconfirmed
What it is

🚨 An unauthenticated attacker can execute commands on critical Lenovo firmware! This isn’t just a minor glitch—it's a potential cybersecurity disaster! 🔥 Think of it like a hotel with a back door that has no locks. Anyone can slip in without a reservation and access any room without being challenged—a huge breach of security! If exploited, this authentication bypass could allow malicious actors to take complete control of the Lenovo Fan Power Controller and System Management Module. Imagine someone tampering with your system settings or even compromising sensitive data—it's absolutely devastating!

Put simply

Think of it like a hotel with a back door that has no locks. Anyone can slip in without a reservation and access any room without being challenged—a huge breach of security! This vulnerability affects the Lenovo Fan Power Controller (FPC2) and System Management Module (SMM) firmware, allowing unauthenticated access to the SMM, letting attackers execute arbitrary commands without the need for credentials.

What to do

If exploited, this authentication bypass could allow malicious actors to take complete control of the Lenovo Fan Power Controller and System Management Module. Imagine someone tampering with your system settings or even compromising sensitive data—it's absolutely devastating! Immediate action is required! Update your Lenovo firmware to the latest version that patches this vulnerability. Regularly check for updates and configure proper security measures to ensure unauthorized access isn’t possible in the future. You've got this! Stay vigilant, apply the fixes, and keep your systems secure! 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01296 · 70.1th percentile
Weakness
CWE-288 · Authentication Bypass Using an Alternate Path or Channel
Published
2022-04-22T21:10Z
EPSS history
Timeline
  • 22 APR 21:10Z
    An authentication bypass vulnerability was discovered in an internal service of the Lenovo Fan Power Controller2 (FPC2) and Lenovo System Management Module…
    cvelistv5