CVE-2021-26257

What it is

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.

At a glance

Exploitability

Can be exploited locally on the machine with a low-privilege account. High risk of service disruption.

Exploit odds

0.2% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2022-08-18 20:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 03:43 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.2% in the next 30 days (EPSS).
• Severity: 5.5 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2022-08-18 20:15 UTC

Last modified

2026-06-17 03:43 UTC

Exploit probability

0.2% · EPSS, next 30 days

Weakness

CWE-119 · Buffer errors

Record status

Modified

Affected

• 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

Attack profile CVSS 3.1 · 5.5

Attack vector

Local

Complexity

Low

Privileges needed

Low

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2021-26257.md and follow it. Check whether this project is affected by CVE-2021-26257. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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