CVE-2021-3843: lenovo thinkpad_11e_3rd_gen_firmware Improper Input Validation
CVSS: 7.2v2.0HighModified
Published 12-11-2021Last modified 03-08-2024
Vulnerability summary
CVE-2021-3843 is a high (CVSS 7.2) Improper Input Validation vulnerability in lenovo thinkpad_11e_3rd_gen_firmware. EPSS estimates a 0.28% chance of exploitation in the next 30 days, higher than 19.1% of scored vulnerabilities.
CVSS score
7.2/10
010
High · v2.0 (NVD)EPSS score
0.28%
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 function to access EEPROM in some ThinkPad models may allow an attacker with local access and elevated privileges to execute arbitrary code.
CVSS metrics
3 scores · 2 sources · 2 versionsMedium 6.7Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HSourcesAll 2 agree
- NVDNIST6.7MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
High 7.2Preferred score · NVD (NIST)
AV:L/AC:L/Au:N/C:C/I:C/A:CSourcesSingle source
EPSS trend
Probability
0.28%
Chance of exploitation in the next 30 days
Percentile
19%
Versus all other CVEs
30-day change
0.00 pp
From 0.28% on 19-09-2026
19-09-202619-10-2026
EPSS score0.28%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Lenovo30 products
- thinkpad_11e_3rd_gen_firmware≤ 1.22 | ≤ 1.29
- thinkpad_11e_4th_gen_celeron_firmware≤ 1.27
- thinkpad_11e_4th_gen_i3_firmware≤ 1.22
- thinkpad_11e_4th_gen_i5_firmware≤ 1.22
- thinkpad_11e_4th_gen_i7_firmware≤ 1.22
1 vendor · 30 products