What’s Vulnerable › Vulnerabilities

CVE-2021-26397

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-05-09 · updated 2026-06-17

Description

Insufficient address validation, may allow an attacker with a compromised ABL and UApp to corrupt sensitive memory locations potentially resulting in a loss of integrity or availability.

Affected products

• AMD Epyc 72F3 Firmware: before milanpi_1.0.0.9 — fixed in milanpi_1.0.0.9
• AMD Epyc 7313 Firmware: before milanpi_1.0.0.9 — fixed in milanpi_1.0.0.9
• AMD Epyc 7313P Firmware: before milanpi_1.0.0.9 — fixed in milanpi_1.0.0.9
• AMD Epyc 7343 Firmware: before milanpi_1.0.0.9 — fixed in milanpi_1.0.0.9
• AMD Epyc 7373X Firmware: before milanpi_1.0.0.9 — fixed in milanpi_1.0.0.9
• AMD Epyc 73F3 Firmware: before milanpi_1.0.0.9 — fixed in milanpi_1.0.0.9
• AMD Epyc 7413 Firmware: before milanpi_1.0.0.9 — fixed in milanpi_1.0.0.9
• AMD Epyc 7443 Firmware: before milanpi_1.0.0.9 — fixed in milanpi_1.0.0.9
• AMD Epyc 7443P Firmware: before milanpi_1.0.0.9 — fixed in milanpi_1.0.0.9
• AMD Epyc 7453 Firmware: before milanpi_1.0.0.9 — fixed in milanpi_1.0.0.9
• AMD Epyc 7473X Firmware: before milanpi_1.0.0.9 — fixed in milanpi_1.0.0.9
• AMD Epyc 74F3 Firmware: before milanpi_1.0.0.9 — fixed in milanpi_1.0.0.9
• AMD Epyc 7513 Firmware: before milanpi_1.0.0.9 — fixed in milanpi_1.0.0.9
• AMD Epyc 7543 Firmware: before milanpi_1.0.0.9 — fixed in milanpi_1.0.0.9
• AMD Epyc 7543P Firmware: before milanpi_1.0.0.9 — fixed in milanpi_1.0.0.9
• AMD Epyc 7573X Firmware: before milanpi_1.0.0.9 — fixed in milanpi_1.0.0.9
• AMD Epyc 75F3 Firmware: before milanpi_1.0.0.9 — fixed in milanpi_1.0.0.9
• AMD Epyc 7643 Firmware: before milanpi_1.0.0.9 — fixed in milanpi_1.0.0.9
• AMD Epyc 7663 Firmware: before milanpi_1.0.0.9 — fixed in milanpi_1.0.0.9
• AMD Epyc 7713 Firmware: before milanpi_1.0.0.9 — fixed in milanpi_1.0.0.9
• AMD Epyc 7713P Firmware: before milanpi_1.0.0.9 — fixed in milanpi_1.0.0.9
• AMD Epyc 7763 Firmware: before milanpi_1.0.0.9 — fixed in milanpi_1.0.0.9
• AMD Epyc 7773X Firmware: before milanpi_1.0.0.9 — fixed in milanpi_1.0.0.9

How to fix

Upgrade to a fixed version: AMD Epyc 72F3 Firmware milanpi_1.0.0.9; AMD Epyc 7313 Firmware milanpi_1.0.0.9; AMD Epyc 7313P Firmware milanpi_1.0.0.9; AMD Epyc 7343 Firmware milanpi_1.0.0.9; AMD Epyc 7373X Firmware milanpi_1.0.0.9; AMD Epyc 73F3 Firmware milanpi_1.0.0.9; AMD Epyc 7413 Firmware milanpi_1.0.0.9; AMD Epyc 7443 Firmware milanpi_1.0.0.9; AMD Epyc 7443P Firmware milanpi_1.0.0.9; AMD Epyc 7453 Firmware milanpi_1.0.0.9; AMD Epyc 7473X Firmware milanpi_1.0.0.9; AMD Epyc 74F3 Firmware milanpi_1.0.0.9. Check the vendor advisory for mitigations.

References

• https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3001
• https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3001

Get alerted when CVE-2021-26397 or the next vulnerability affects your stack