CVE-2021-3969 is a Time of Check Time of Use (TOCTOU) vulnerability in Lenovo System Interface Foundation's IMController component, affecting versions prior to 1.1.20.3. This flaw allows a local attacker to achieve privilege escalation. Rated 7.0 HIGH on CVSS, it has high impact on confidentiality, integrity, and availability, but requires high attack complexity. There is no evidence of active exploitation, public exploit code, or inclusion in CISA's KEV catalog, though it has received some community discussion and media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 1.1.20.3CPE matchmatch criteria | cpe:2.3:a:lenovo:system_interface_foundation:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
The average CVE in this peer group has 0.4 InfoSec Media, 0.1 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.