What’s Vulnerable › Vulnerabilities

CVE-2023-20592

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-11-14 · updated 2026-06-17

Description

Improper or unexpected behavior of the INVD instruction in some AMD CPUs may allow an attacker with a malicious hypervisor to affect cache line write-back behavior of the CPU leading to a potential loss of guest virtual machine (VM) memory integrity.

Affected products

• AMD Epyc 7001 Firmware: all versions
• AMD Epyc 7203 Firmware: before milanpi_1.0.0.c — fixed in milanpi_1.0.0.c
• AMD Epyc 7203P Firmware: before milanpi_1.0.0.c — fixed in milanpi_1.0.0.c
• AMD Epyc 7232P Firmware: all versions
• AMD Epyc 7251 Firmware: all versions
• AMD Epyc 7252 Firmware: all versions
• AMD Epyc 7261 Firmware: all versions
• AMD Epyc 7262 Firmware: all versions
• AMD Epyc 7272 Firmware: all versions
• AMD Epyc 7281 Firmware: all versions
• AMD Epyc 7282 Firmware: all versions
• AMD Epyc 72F3 Firmware: before milanpi_1.0.0.c — fixed in milanpi_1.0.0.c
• AMD Epyc 7301 Firmware: all versions
• AMD Epyc 7302 Firmware: all versions
• AMD Epyc 7302P Firmware: all versions
• AMD Epyc 7303 Firmware: before milanpi_1.0.0.c — fixed in milanpi_1.0.0.c
• AMD Epyc 7303P Firmware: before milanpi_1.0.0.c — fixed in milanpi_1.0.0.c
• AMD Epyc 7313 Firmware: before milanpi_1.0.0.c — fixed in milanpi_1.0.0.c
• AMD Epyc 7313P Firmware: before milanpi_1.0.0.c — fixed in milanpi_1.0.0.c
• AMD Epyc 7343 Firmware: before milanpi_1.0.0.c — fixed in milanpi_1.0.0.c
• AMD Epyc 7351 Firmware: all versions
• AMD Epyc 7351P Firmware: all versions
• AMD Epyc 7352 Firmware: all versions
• AMD Epyc 7371 Firmware: all versions
• AMD Epyc 7373X Firmware: before milanpi_1.0.0.c — fixed in milanpi_1.0.0.c
• AMD Epyc 73F3 Firmware: before milanpi_1.0.0.c — fixed in milanpi_1.0.0.c
• AMD Epyc 7401 Firmware: all versions
• AMD Epyc 7401P Firmware: all versions
• AMD Epyc 7402 Firmware: all versions
• AMD Epyc 7402P Firmware: all versions

How to fix

Upgrade to a fixed version: AMD Epyc 7203 Firmware milanpi_1.0.0.c; AMD Epyc 7203P Firmware milanpi_1.0.0.c; AMD Epyc 72F3 Firmware milanpi_1.0.0.c; AMD Epyc 7303 Firmware milanpi_1.0.0.c; AMD Epyc 7303P Firmware milanpi_1.0.0.c; AMD Epyc 7313 Firmware milanpi_1.0.0.c; AMD Epyc 7313P Firmware milanpi_1.0.0.c; AMD Epyc 7343 Firmware milanpi_1.0.0.c; AMD Epyc 7373X Firmware milanpi_1.0.0.c; AMD Epyc 73F3 Firmware milanpi_1.0.0.c; AMD Epyc 7413 Firmware milanpi_1.0.0.c; AMD Epyc 7443 Firmware milanpi_1.0.0.c. Check the vendor advisory for mitigations.

References

• https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3005
• https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3005

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