What is CVE-2021-26257?

CVE-2021-26257 is a medium-severity vulnerability in Intel Dual Band Wireless-Ac 3165, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.5/10. Published 2022-08-18.

How severe is CVE-2021-26257?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Buffer overflow in Intel Dual Band Wireless-Ac 3165

CVE-2021-26257

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.

Vulnerability class: Buffer Overflow

Published 2022-08-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.002 (8.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 8.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Weakness classification (CWE)

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

References

www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00628.html (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2021-26257?: CVE-2021-26257 is a medium-severity vulnerability in Intel Dual Band Wireless-Ac 3165, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.5/10. Published 2022-08-18.
How severe is CVE-2021-26257?: Medium severity. CVSS v3 base score is 5.5 out of 10.