CVE-2021-26348

Name: CVE-2021-26348
Creator: NVD / NIST
Published: 2022-05-11T17:15:08.38+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.21%

Last modified Jun 17, 2026

CVE-2021-26348 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. Failure to flush the Translation Lookaside Buffer (TLB) of the I/O memory management unit (IOMMU) may lead an IO device to write to memory it should not be able to access, resulting in a potential loss of integrity.. EPSS estimates a 0.21% chance of exploitation in the next 30 days.

Description

Failure to flush the Translation Lookaside Buffer (TLB) of the I/O memory management unit (IOMMU) may lead an IO device to write to memory it should not be able to access, resulting in a potential loss of integrity.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.21%

11.5th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Amd	Epyc 7763 Firmware	< milanpi-sp3_1.0.0.7
Amd	Epyc 7713p Firmware	< milanpi-sp3_1.0.0.7
Amd	Epyc 7713 Firmware	< milanpi-sp3_1.0.0.7
Amd	Epyc 7663 Firmware	< milanpi-sp3_1.0.0.7
Amd	Epyc 7643 Firmware	< milanpi-sp3_1.0.0.7
Amd	Epyc 75f3 Firmware	< milanpi-sp3_1.0.0.7
Amd	Epyc 7543p Firmware	< milanpi-sp3_1.0.0.7
Amd	Epyc 7543 Firmware	< milanpi-sp3_1.0.0.7
Amd	Epyc 7513 Firmware	< milanpi-sp3_1.0.0.7
Amd	Epyc 7453 Firmware	< milanpi-sp3_1.0.0.7
Amd	Epyc 74f3 Firmware	< milanpi-sp3_1.0.0.7
Amd	Epyc 7443p Firmware	< milanpi-sp3_1.0.0.7
Amd	Epyc 7443 Firmware	< milanpi-sp3_1.0.0.7
Amd	Epyc 7413 Firmware	< milanpi-sp3_1.0.0.7
Amd	Epyc 73f3 Firmware	< milanpi-sp3_1.0.0.7
Amd	Epyc 7343 Firmware	< milanpi-sp3_1.0.0.7
Amd	Epyc 7313p Firmware	< milanpi-sp3_1.0.0.7
Amd	Epyc 7313 Firmware	< milanpi-sp3_1.0.0.7
Amd	Epyc 72f3 Firmware	< milanpi-sp3_1.0.0.7
Amd	Epyc 7773x Firmware	< milanpi-sp3_1.0.0.7
Amd	Epyc 7473x Firmware	< milanpi-sp3_1.0.0.7
Amd	Epyc 7573x Firmware	< milanpi-sp3_1.0.0.7
Amd	Epyc 7373x Firmware	< milanpi-sp3_1.0.0.7

References

https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1028Vendor Advisory
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1028Vendor Advisory

Timeline

Published: May 11, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-26348?

How severe is CVE-2021-26348?

CVE-2021-26348 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.

How do I fix CVE-2021-26348?

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-2021-26348?

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

Scan your code now

Source: NVD / NIST