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Fencer Intel
medium 5.5

CVE-2021-26257 json

Improper buffer restrictions in firmware for some Intel(R) Wireless Bluetooth(R) and Killer(TM) Bluetooth(R) products before version 22.120…

published 4y ago modified 4mo ago also EUVD-2021-13074

cvss
5.5
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

Improper buffer restrictions in firmware for some Intel(R) Wireless Bluetooth(R) and Killer(TM) Bluetooth(R) products before version 22.120 may allow an authenticated user to potentially enable denial of service via local access.

Patch / fix

  • intel wi-fi_6_ax411_firmware 22.120
  • intel wi-fi_6_ax211_firmware 22.120
  • intel wi-fi_6_ax210_firmware 22.120
  • intel wi-fi_6_ax201_firmware 22.120
  • intel wi-fi_6_ax200_firmware 22.120
  • intel wireless-ac_9560_firmware 22.120
  • intel wireless-ac_9462_firmware 22.120
  • intel wireless-ac_9461_firmware 22.120
  • intel wireless-ac_9260_firmware 22.120
  • intel dual_band_wireless-ac_8265_firmware 22.120
  • intel dual_band_wireless-ac_8260_firmware 22.120
  • intel dual_band_wireless-ac_3168_firmware 22.120
  • intel wireless_7265_firmware 22.120
  • intel dual_band_wireless-ac_3165_firmware 22.120
  • intel killer_wi-fi_6e_ax1690_firmware 22.120
  • intel killer_wi-fi_6e_ax1675_firmware 22.120
  • intel killer_wi-fi_6_ax1650_firmware 22.120
  • intel killer_wireless-ac_1550_firmware 22.120

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
last yr.

Exploit prediction

0.20% chance of exploitation in the next 30 days, higher than 9% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CNA 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

  • n/a Intel(R) Wireless Bluetooth(R) and Killer(TM) Bluetooth(R) products

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

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.