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Fencer Vulns
medium 6.7

CVE-2022-4574 json

An SMI handler input validation vulnerability in the BIOS of some ThinkPad models could allow an attacker with local access and elevated pr…

published 2023-10-30 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-51907

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

Summary

An SMI handler input validation vulnerability in the BIOS of some ThinkPad models could allow an attacker with local access and elevated privileges to execute arbitrary code.

Patch / fix

  • lenovo thinkpad_x13_yoga_gen_2_firmware 1.40
  • lenovo thinkpad_x13_yoga_gen_1_firmware 1.45
  • lenovo thinkpad_x13_gen_3_firmware 1.33
  • lenovo thinkpad_x13_gen_2_firmware 1.51
  • lenovo thinkpad_x13_firmware 1.26
  • lenovo thinkpad_x1_yoga_7th_gen_firmware 1.37
  • lenovo thinkpad_x1_yoga_6th_gen_firmware 1.59
  • lenovo thinkpad_x1_yoga_5th_gen_firmware 1.30
  • lenovo thinkpad_x1_yoga_4th_gen_firmware 1.56
  • lenovo thinkpad_x1_titanium_firmware 1.24
  • lenovo thinkpad_x1_nano_gen_2_firmware 1.18
  • lenovo thinkpad_x1_nano_gen_1_firmware 1.55
  • lenovo thinkpad_x1_extreme_gen_5_firmware 1.16
  • lenovo thinkpad_x1_extreme_4th_gen_firmware 1.22
  • lenovo thinkpad_x1_extreme_3rd_gen_firmware 1.27
  • lenovo thinkpad_x1_carbon_9th_gen_firmware 1.59
  • lenovo thinkpad_x1_carbon_8th_gen_firmware 1.30
  • lenovo thinkpad_x1_carbon_7th_gen_firmware 1.56
  • lenovo thinkpad_x1_carbon_10th_gen_firmware 1.37
  • lenovo thinkpad_t16_gen_1_firmware 1.31

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 y ago

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 ThinkPad BIOS
  • lenovo thinkpad

Classification

Weakness
  • CWE-20 Improper Input Validation

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.