What is CVE-2021-26254?

CVE-2021-26254 is a medium-severity vulnerability in Intel Killer Ac 1550, classified under Out-of-bounds Read. CVSS score: 5.5/10. Published 2022-08-18.

How severe is CVE-2021-26254?

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

Out-of-bounds Read in Intel Killer Ac 1550

CVE-2021-26254

Out of bounds read for some Intel(R) PROSet/Wireless WiFi and Killer(TM) WiFi products may allow a privileged 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-125 — Out-of-bounds Read

References

www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00621.html (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2021-26254?: CVE-2021-26254 is a medium-severity vulnerability in Intel Killer Ac 1550, classified under Out-of-bounds Read. CVSS score: 5.5/10. Published 2022-08-18.
How severe is CVE-2021-26254?: Medium severity. CVSS v3 base score is 5.5 out of 10.