Is CVE-2021-3969 in the CISA KEV catalog?

No. CVE-2021-3969 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-3969?

CVE-2021-3969 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2021-3969?

CVE-2021-3969 has an EPSS score of 1.77% (75th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-3969?

Upgrade system interface foundation to 1.1.20.3 or later.

CVE & CISA-KEV Catalog

CVE-2021-3969

HIGHEPSS 75th pctl

7.8

CVSS v3

NVD

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.

CWE-367TOCTOU Race Condition

How to fix

Remediation Available

system interface foundationNVD

Affected:< 1.1.20.3Fixed in:1.1.20.3CVE-2021-3969derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.77%probability of exploitation in 30 days

75thpercentile

Elevated risk: more likely to be exploited than 75% of all known CVEs.

References

Patch1

support.lenovo.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.