How severe is CVE-2023-20585?

CVE-2023-20585 has a CVSS 4.0 base score of 5.6, rated medium severity.

Is CVE-2023-20585 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2023-20585?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2023-20585 have an EU (EUVD) identifier?

Yes. CVE-2023-20585 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-24764.

When was CVE-2023-20585 published?

CVE-2023-20585 was published on 2026-04-16 and last updated on 2026-06-17.

CVE-2023-20585

CVE-2023-20585 is a medium-severity vulnerability with a CVSS 4.0 base score of 5.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-788.

Key facts

Severity: Medium (CVSS 4.0 base score 5.6)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-24764
Weakness: CWE-788
Published: 2026-04-16
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2023-20585?: 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.
How severe is CVE-2023-20585?: CVE-2023-20585 has a CVSS 4.0 base score of 5.6, rated medium severity.
Is CVE-2023-20585 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2023-20585?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-20585 have an EU (EUVD) identifier?: Yes. CVE-2023-20585 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-24764.
When was CVE-2023-20585 published?: CVE-2023-20585 was published on 2026-04-16 and last updated on 2026-06-17.

References

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

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