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Fencer Vulns
medium 6.7

CVE-2023-4028 json

A buffer overflow has been identified in the SystemUserMasterHddPwdDxe driver in some Lenovo Notebook products which may allow an attacker…

published 2023-08-17 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-53921

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 9%
public exploits
0
none known

Summary

A buffer overflow has been identified in the SystemUserMasterHddPwdDxe driver in some Lenovo Notebook products which may allow an attacker with local access and elevated privileges to execute arbitrary code.

Patch / fix

  • lenovo 13w_yoga_firmware jacn38ww
  • lenovo 13w_yoga_gen_2_firmware kbcn20ww
  • lenovo ideapad_1-11ada05_firmware fqcn29ww
  • lenovo ideapad_1-11igl05_firmware dwcn28ww
  • lenovo ideapad_1-14ada05_firmware fqcn29ww
  • lenovo ideapad_1-14igl05_firmware dwcn28ww
  • lenovo flex_5-14alc05_firmware gjcn32ww
  • lenovo flex_5-14are05_firmware eecn43ww
  • lenovo flex_5-14iil05_firmware eccn45ww
  • lenovo flex_5-14itl05_firmware fxcn44ww
  • lenovo flex_5-15alc05_firmware gjcn32ww
  • lenovo flex_5-15iil05_firmware eccn45ww
  • lenovo flex_5-15itl05_firmware fxcn44ww
  • lenovo ideapad_flex_5_14abr8_firmware l7cn17ww
  • lenovo ideapad_flex_5_14alc7_firmware jccn35ww
  • lenovo ideapad_flex_5_14iau7_firmware j7cn44ww
  • lenovo ideapad_flex_5_14iru8_firmware l6cn20ww
  • lenovo ideapad_flex_5_16abr8_firmware l7cn17ww
  • lenovo ideapad_flex_5_16alc7_firmware jccn35ww
  • lenovo ideapad_flex_5_16iau7_firmware j7cn44ww

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 9% 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 Lenovo Notebook
  • lenovo ideapad_flex_5_16iau7
  • lenovo ideapad_flex_5_16iru8
  • lenovo 13w_yoga
  • lenovo 13w_yoga_gen_2
  • lenovo ideapad_5-14alc05
  • lenovo ideapad_5-15alc05
  • lenovo flex_5-14are05
  • lenovo flex_5-14iil05
  • lenovo flex_5-14itl05
  • lenovo flex_5-15alc05
  • lenovo flex_5-15iil05
  • lenovo flex_5-15itl05
  • lenovo ideapad_1-11ada05
  • lenovo ideapad_1-11igl05
  • lenovo ideapad_1-14ada05
  • lenovo ideapad_1-14igl05
  • lenovo ideapad_flex_5_14abr8
  • lenovo ideapad_flex_5_14alc7
  • lenovo ideapad_flex_5_14iau7
  • lenovo ideapad_flex_5_14iru8
  • lenovo ideapad_flex_5_16abr8
  • lenovo ideapad_flex_5_16alc7
  • lenovo flex_7_14iau7_firmware
  • lenovo flex_7_14iru8
  • lenovo thinkbook_13s_g2_are
  • lenovo thinkbook_13s_g2_itl
  • lenovo thinkbook_13s_g3_acn
  • lenovo thinkbook_13s_g4_iap
  • lenovo thinkbook_13x_g2_iap
  • lenovo thinkbook_14s_g2_itl
  • lenovo yoga_9-15imh5

Classification

Weakness
  • CWE-120 Buffer Copy without Checking Size of Input

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.