CVE-2021-3969

Description

A Time of Check Time of Use (TOCTOU) vulnerability was reported in IMController, a software component of Lenovo System Interface Foundation, prior to version 1.1.20.3that could allow a local attacker to elevate privileges.

Remediation

Solution:

  • Update the IMController component of Lenovo System Interface Foundation to version 1.1.20.3. Full mitigation guidance can be found in LEN-75210.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.79% Top 30%
Vendor Advisory lenovo.com
Affected: Lenovo IMController
Published at:
Updated at:

References

Link Tags
https://support.lenovo.com/us/en/product_security/LEN-75210 patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-3969?
CVE-2021-3969 has been scored as a high severity vulnerability.
How to fix CVE-2021-3969?
To fix CVE-2021-3969: Update the IMController component of Lenovo System Interface Foundation to version 1.1.20.3. Full mitigation guidance can be found in LEN-75210.
Is CVE-2021-3969 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-3969 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-3969?
CVE-2021-3969 affects Lenovo IMController.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.