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Fencer Vulns
medium 4.4

CVE-2022-3743 json

A potential vulnerability was discovered in LCFC BIOS for some Lenovo consumer notebook models that could allow a local attacker with eleva…

published 2023-08-23 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-43099

cvss
4.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 7%
public exploits
0
none known

Summary

A potential vulnerability was discovered in LCFC BIOS for some Lenovo consumer notebook models that could allow a local attacker with elevated privileges under certain conditions the ability to enumerate Embedded Controller (EC) commands.

Patch / fix

  • lenovo ideapad_1_14iau7_firmware jkcn34ww
  • lenovo ideapad_1_14igl7_firmware kkcn15ww
  • lenovo ideapad_1_15iau7_firmware jkcn34ww
  • lenovo ideapad_1_15igl7_firmware kkcn15ww
  • lenovo ideapad_1-14ijl7_firmware htcn31ww
  • lenovo ideapad_1-15ijl7_firmware htcn31ww
  • lenovo ideapad_3_14iau7_firmware jkcn34ww
  • lenovo ideapad_3_15iau7_firmware jkcn34ww
  • lenovo ideapad_3_17iau7_firmware jkcn34ww
  • lenovo ideapad_3-15igl05_firmware dvcn28ww
  • lenovo ideapad_3-17iil05_firmware emcn56ww
  • lenovo ideapad_3-17itl6_firmware ggcn51ww
  • lenovo ideapad_5_15ial7_firmware jbcn27ww
  • lenovo ideapad_5-15itl05_firmware fhcn70ww
  • lenovo l3-15iml05_firmware ejcn30ww
  • lenovo l3-15itl6_firmware gfcn29ww
  • lenovo legion_5_15iah7_firmware j2cn49ww
  • lenovo legion_5_15iah7h_firmware j2cn49ww
  • lenovo legion_5_pro_16iah7_firmware j2cn49ww
  • lenovo legion_5_pro_16iah7h_firmware j2cn49ww

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.18% chance of exploitation in the next 30 days, higher than 7% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 4.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
NVD 3.1 4.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Affected products

  • Lenovo Notebook

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.