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Fencer Intel
medium 6.4

CVE-2020-8332 json

A potential vulnerability in the SMI callback function used in the legacy BIOS mode USB drivers in some legacy Lenovo and IBM System x serv…

published 6y ago modified 4mo ago also EUVD-2020-29199

cvss
6.4
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 13%
public exploits
0
none known

Summary

A potential vulnerability in the SMI callback function used in the legacy BIOS mode USB drivers in some legacy Lenovo and IBM System x servers may allow arbitrary code execution. Servers operating in UEFI mode are not affected.

Patch / fix

  • lenovo bladecenter_hs23_firmware tke170b
  • lenovo bladecenter_hs23e_firmware ahe172b
  • lenovo compute_node-x440_firmware cge128a
  • lenovo flex_system_x220_firmware kse170b
  • lenovo flex_system_x240_firmware b2e172b
  • lenovo flex_system_x440_firmware cne172b
  • lenovo nextscale_nx360_m4_firmware fhe132b
  • lenovo system_x3300_m4_firmware yae166b
  • lenovo system_x3500_m4_firmware y5e170b
  • lenovo system_x3530_m4_firmware bee174b
  • lenovo system_x3550_m4_firmware d7e174b
  • lenovo system_x3630_m4_firmware bee174b
  • lenovo system_x3650_m4_firmware vve172b
  • lenovo system_x3650_m4_bd_firmware vve172b
  • lenovo system_x3650_m4_hd_firmware vve172b
  • lenovo system_x3750_m4_firmware a5e130a, koe170b
  • lenovo idataplex_dx360_m4_firmware tde168b
  • lenovo idataplex_dx360_m4_water_cooled_firmware tde168b

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Exploit prediction

0.23% chance of exploitation in the next 30 days, higher than 13% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 6.4 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 6.4 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.9 AV:L/AC:M/Au:N/C:C/I:C/A:C

Affected products

  • Lenovo System x
  • IBM System x

Classification

Weakness
  • CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition

References

Sources

Fencer Intel 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.