CVE-2021-33113

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% 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-20

Description

Improper input validation for some Intel(R) PROSet/Wireless WiFi in multiple operating systems and Killer(TM) WiFi in Windows 10 and 11 may allow an unauthenticated user to potentially enable denial of service or information disclosure via adjacent access.

Affected products

Intel Ac 1550 Firmware: before 3.1021.733.0 — fixed in 3.1021.733.0
Intel Ac 3165 Firmware: before 22.80 — fixed in 22.80
Intel Ac 3168 Firmware: before 22.80 — fixed in 22.80
Intel Ac 7265 Firmware: before 22.80 — fixed in 22.80
Intel Ac 8260 Firmware: before 22.80 — fixed in 22.80
Intel Ac 8265 Firmware: before 22.80 — fixed in 22.80
Intel Ac 9260 Firmware: before 22.80 — fixed in 22.80
Intel Ac 9461 Firmware: before 22.80 — fixed in 22.80
Intel Ac 9462 Firmware: before 22.80 — fixed in 22.80
Intel Ac 9560 Firmware: before 22.80 — fixed in 22.80
Intel Ax1650 Firmware: before 3.1021.733.0 — fixed in 3.1021.733.0
Intel Ax1675 Firmware: before 3.1021.733.0 — fixed in 3.1021.733.0
Intel Ax200 Firmware: before 22.80 — fixed in 22.80
Intel Ax201 Firmware: before 22.80 — fixed in 22.80
Intel Ax210 Firmware: before 22.80 — fixed in 22.80

How to fix

Upgrade to a fixed version: Intel Ac 1550 Firmware 3.1021.733.0; Intel Ac 3165 Firmware 22.80; Intel Ac 3168 Firmware 22.80; Intel Ac 7265 Firmware 22.80; Intel Ac 8260 Firmware 22.80; Intel Ac 8265 Firmware 22.80; Intel Ac 9260 Firmware 22.80; Intel Ac 9461 Firmware 22.80; Intel Ac 9462 Firmware 22.80; Intel Ac 9560 Firmware 22.80; Intel Ax1650 Firmware 3.1021.733.0; Intel Ax1675 Firmware 3.1021.733.0. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2021-33113 or the next vulnerability affects your stack