Back to Database
Status published
High
CVE-2021-3969
A Time of Check Time of Use (TOCTOU) vulnerability was...
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-3969
Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Lenovo thanks Rick Veldhoven from Fox-IT, part of NCC Group for reporting this issue.
More from Lenovo
View All →CVE-2025-9548
A potential null pointer dereference vulnerability was reported in the...
Medium
6.8
CVE-2025-9319
A potential vulnerability was reported in the Lenovo Wallpaper Client...
High
7.5
CVE-2025-9214
A missing authentication vulnerability was reported in some Lenovo printers...
Medium
5.3
CVE-2025-9201
A potential DLL hijacking vulnerability was discovered in Lenovo Browser...
High
8.5
CVE-2025-8557
An internal product security audit of Lenovo XClarity Orchestrator (LXCO)...
High
8.7
Affected Vendor
Lenovo
View all reports →Affected Software
IMController
Vulnerable Versions:
unspecified
Timeline
Official Publish:
May 18th, 2022
Last Modified:
August 3rd, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H