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-2022-43098

cvss: 6.7; 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 8%
public exploits: 0; none known

A potential vulnerability was discovered in LCFC BIOS for some Lenovo consumer notebook models that could allow a local attacker with elevated privileges to execute arbitrary code due to improper buffer validation.

Patch / fix

fixed in 30

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
lenovo legion_5_pro-16ith6_firmware h1cn52ww
lenovo legion_5_pro-16ith6h_firmware h1cn52ww
lenovo legion_5-15imh05_firmware efcn58ww
lenovo legion_5-15imh05h_firmware efcn58ww
lenovo legion_5-15imh6_firmware g8cn22ww
lenovo legion_5-15ith6_firmware h1cn52ww
lenovo legion_5-15ith6h_firmware h1cn52ww
lenovo legion_5-17imh05_firmware efcn58ww
lenovo legion_5-17imh05h_firmware efcn58ww
lenovo legion_5-17ith6_firmware h1cn52ww

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 2 y ago (2024-10-08)

Exploit prediction

0.19% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.7	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	6.7	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

Lenovo Notebook
lenovo ideapad_1_14iau7_firmware
lenovo ideapad_1_14igl7_firmware
lenovo ideapad_1_15iau7_firmware
lenovo ideapad_1_15igl7_firmware
lenovo ideapad_1-14ijl7_firmware
lenovo ideapad_1-15ijl7_firmware
lenovo ideapad_3_14iau7_firmware
lenovo ideapad_3_15iau7_firmware
lenovo ideapad_3_17iau7_firmware
lenovo ideapad_3-15igl05_firmware
lenovo ideapad_3-17iil05_firmware
lenovo ideapad_3-17itl6_firmware
lenovo ideapad_5_15ial7_firmware
lenovo ideapad_5-15itl05_firmware
lenovo l3-15iml05_firmware
lenovo l3-15itl6_firmware
lenovo legion_5_15iah7_firmware
lenovo legion_5_15iah7h_firmware
lenovo legion_5_pro_16iah7_firmware
lenovo legion_5_pro_16iah7h_firmware
lenovo legion_5_pro-16ith6_firmware
lenovo legion_5_pro-16ith6h_firmware
lenovo legion_5-15imh05_firmware
lenovo legion_5-15imh05h_firmware
lenovo legion_5-15imh6_firmware
lenovo legion_5-15ith6_firmware
lenovo legion_5-15ith6h_firmware
lenovo legion_5-17imh05_firmware
lenovo legion_5-17imh05h_firmware
lenovo legion_5-17ith6_firmware
lenovo legion_5-17ith6h_firmware
lenovo legion_5p-15imh05_firmware
lenovo legion_5p-15imh05h_firmware
lenovo legion_7_16iax7_firmware
lenovo legion_7-16ithg6_firmware
lenovo s14_g2_itl_firmware
lenovo s14_g3_iap_firmware
lenovo slim_7_14iap7_firmware
lenovo slim_7_carbon_13iap7_firmware
lenovo slim_7_prox_14iah7_firmware
lenovo thinkbook_15p_imh_firmware
lenovo v14_g2_ijl_firmware
lenovo v14_g3_iap_firmware
lenovo v15_g2_ijl_firmware
lenovo v15_g3_iap_firmware
lenovo v17_g3_iap_firmware
lenovo s540-13itl_firmware
lenovo slim_7_pro-14ihu5_firmware
lenovo slim_9-14itl05_firmware

Classification

Weakness

CWE-120 Buffer Copy without Checking Size of Input

References

support.lenovo.com /us/en/product_security/LEN-103710
vendor-advisory

Sources

CVE List CVE-2022-3742
NVD CVE-2022-3742

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.

Summary