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CVE-2023-20591

30
FAUCET Score

CVE-2023-20591 is a critical vulnerability affecting AMD products, stemming from improper re-initialization of the IOMMU during a DRTM event. This flaw allows an attacker to maintain an untrusted platform configuration, potentially leading to unauthorized reading or modification of hypervisor memory. With a CVSS score of 10.0 (CRITICAL), it presents a severe risk to confidentiality, integrity, and availability, requiring no user interaction or complex attack vectors. While there is no known active exploitation or public exploit code, the vulnerability has garnered significant community discussion, indicating awareness and potential future interest.

Impacted Technologies

VendorProductVersion(s)CPE
< genoapi_1.0.0.8CPE matchmatch criteria
cpe:2.3:o:amd:epyc_8024pn_firmware:*:*:*:*:*:*:*:*
< genoapi_1.0.0.8CPE matchmatch criteria
cpe:2.3:o:amd:epyc_8024p_firmware:*:*:*:*:*:*:*:*
< genoapi_1.0.0.8CPE matchmatch criteria
cpe:2.3:o:amd:epyc_8124pn_firmware:*:*:*:*:*:*:*:*
< genoapi_1.0.0.8CPE matchmatch criteria
cpe:2.3:o:amd:epyc_8124p_firmware:*:*:*:*:*:*:*:*
< genoapi_1.0.0.8CPE matchmatch criteria
cpe:2.3:o:amd:epyc_8224pn_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.2
Impact Score
3.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.30%
Probability of exploitation in next 30 days
EPSS Percentile
22.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0030 is in the 3rd percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

amd.com / en/resources/product-security/bulletin/amd-sb-3003.html
Vendor Advisory