CVE-2021-33139

Severity: medium (CVSS 5.7 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-02-09 · updated 2026-06-17
Weakness: CWE-754

Description

Improper conditions check in firmware for some Intel(R) Wireless Bluetooth(R) and Killer(TM) Bluetooth(R) products before version 22.100 may allow an authenticated user to potentially enable denial of service via adjacent access.

Affected products

Intel Ac3168 Firmware: before 22.100 — fixed in 22.100
Intel Ac 1550 Firmware: before 22.100 — fixed in 22.100
Intel Ac 3165 Firmware: before 22.100 — fixed in 22.100
Intel Ac 7265 Firmware: before 22.100 — fixed in 22.100
Intel Ac 8260 Firmware: before 22.100 — fixed in 22.100
Intel Ac 8265 Firmware: before 22.100 — fixed in 22.100
Intel Ac 9260 Firmware: before 22.100 — fixed in 22.100
Intel Ac 9461 Firmware: before 22.100 — fixed in 22.100
Intel Ac 9462 Firmware: before 22.100 — fixed in 22.100
Intel Ac 9560 Firmware: before 22.100 — fixed in 22.100
Intel Ax1650 Firmware: before 22.100 — fixed in 22.100
Intel Ax1675 Firmware: before 22.100 — fixed in 22.100
Intel Ax200 Firmware: before 22.100 — fixed in 22.100
Intel Ax201 Firmware: before 22.100 — fixed in 22.100
Intel Ax210 Firmware: before 22.100 — fixed in 22.100
Intel Ax211 Firmware: before 22.100 — fixed in 22.100

How to fix

Upgrade to a fixed version: Intel Ac3168 Firmware 22.100; Intel Ac 1550 Firmware 22.100; Intel Ac 3165 Firmware 22.100; Intel Ac 7265 Firmware 22.100; Intel Ac 8260 Firmware 22.100; Intel Ac 8265 Firmware 22.100; Intel Ac 9260 Firmware 22.100; Intel Ac 9461 Firmware 22.100; Intel Ac 9462 Firmware 22.100; Intel Ac 9560 Firmware 22.100; Intel Ax1650 Firmware 22.100; Intel Ax1675 Firmware 22.100. Check the vendor advisory for mitigations.

References

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