CVE-2021-33126

Name: CVE-2021-33126
Creator: NVD / NIST
Published: 2022-08-18T20:15:09.5+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.4/10EPSS 0.19%

Last modified Jun 17, 2026

CVE-2021-33126 is a medium-severity vulnerability rated 4.4/10 on the CVSS scale. Improper access control in the firmware for some Intel(R) 700 and 722 Series Ethernet Controllers and Adapters before versions 8.5 and 1.5.5 may allow a privileged user to potentially enable denial of service via local access.. EPSS estimates a 0.19% chance of exploitation in the next 30 days.

Description

Improper access control in the firmware for some Intel(R) 700 and 722 Series Ethernet Controllers and Adapters before versions 8.5 and 1.5.5 may allow a privileged user to potentially enable denial of service via local access.

Metrics

CVSS 3.1

4.4/10

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.19%

8.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Intel	Ethernet Controller Xxv710 Firmware	< 8.5
Intel	Ethernet Controller Xl710 Firmware	< 8.5
Intel	Ethernet Controller V710 Firmware	< 8.5
Intel	Ethernet Controller X710 Firmware	< 8.5
Intel	Ethernet Network Adapter X722da2 Firmware	< 1.5.5
Intel	Ethernet Network Adapter X722da4fh Firmware	< 1.5.5
Intel	Ethernet Network Adapter X722da4g1p5 Firmware	< 1.5.5

References

https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00593.htmlPatch, Vendor Advisory
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00593.htmlPatch, Vendor Advisory

Timeline

Published: Aug 18, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-33126?

How severe is CVE-2021-33126?

CVE-2021-33126 has a CVSS score of 4.4/10 (MEDIUM severity). The EPSS model estimates a 0.19% probability of exploitation in the next 30 days.

How do I fix CVE-2021-33126?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-33126?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST