What’s Vulnerable › Vulnerabilities

CVE-2023-20585

• Severity: medium (CVSS 5.6 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-16 · updated 2026-10-28
• Weakness: CWE-788

Description

Insufficient checks of the RMP on host buffer access in IOMMU may allow an attacker with privileges and a compromised hypervisor to trigger an out of bounds condition without RMP checks, resulting in a potential loss of confidential guest integrity.

Affected products

• AMD EPYC™ 7003 Series Processors: all versions
• AMD EPYC™ 9004 Series Processors: all versions
• AMD EPYC™ Embedded 7003 Series Processors: all versions
• AMD EPYC™ Embedded 9004 Series Processors: all versions

References

• https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3016.html

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