CVE-2021-3969

Name: CVE-2021-3969
Creator: NVD / NIST
Published: 2022-05-18T16:15:08.127+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7/10EPSS 1.77%

Last modified Jun 17, 2026

CVE-2021-3969 is a high-severity vulnerability rated 7/10 on the CVSS scale. 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.. EPSS estimates a 1.77% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7/10

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

EPSS Probability

1.77%

75.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Lenovo	System Interface Foundation	< 1.1.20.3

References

https://support.lenovo.com/us/en/product_security/LEN-75210Patch, Vendor Advisory
https://support.lenovo.com/us/en/product_security/LEN-75210Patch, Vendor Advisory

Timeline

Published: May 18, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-3969?

How severe is CVE-2021-3969?

CVE-2021-3969 has a CVSS score of 7/10 (HIGH severity). The EPSS model estimates a 1.77% probability of exploitation in the next 30 days.

How do I fix CVE-2021-3969?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-3969?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST