CVE-2021-3786: lenovo ideapad_s940-14iwl_firmware Improper Input Validation
CVSS: 5.5v3.1MediumModified
Published 12-11-2021Last modified 03-08-2024
Vulnerability summary
CVE-2021-3786 is a medium (CVSS 5.5) Improper Input Validation vulnerability in lenovo ideapad_s940-14iwl_firmware. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 13.2% of scored vulnerabilities.
CVSS score
5.5/10
010
Medium · v3.1 (NVD)EPSS score
0.23%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 12-11-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
A potential vulnerability in the SMI callback function used in CSME configuration of some Lenovo Notebook and ThinkPad systems could be used to leak out data out of the SMRAM range.
CVSS metrics
3 scores · 2 sources · 2 versionsMedium 5.5Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:NSources2 sources · 4.4–5.5
- CVE.orgCNA4.4MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:HDiffers
Low 2.1Preferred score · NVD (NIST)
AV:L/AC:L/Au:N/C:P/I:N/A:NSourcesSingle source
EPSS trend
Probability
0.23%
Chance of exploitation in the next 30 days
Percentile
13%
Versus all other CVEs
30-day change
0.00 pp
From 0.23% on 19-09-2026
19-09-202619-10-2026
EPSS score0.23%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Lenovo134 products
- ideapad_s940-14iwl_firmware≤ 12.0.81.1753
- ideapad_yoga_s940-14iwl_firmware≤ 12.0.81.1753
- notebook and thinkpad biosvarious
- thinkpad_10_firmware< 2021-10-25
- thinkpad_11e_3rd_gen_firmware< 2021-10-31
1 vendor · 134 products