CVE-2023-20587

HIGHNVD 7.17.1—

7.1

Improper Access Control in System Management Mode (SMM) may allow an attacker access to the SPI flash potentially leading to arbitrary code execution.

CVSS v3: 7.1
EG Score: 7.1(medium)
EPSS: 10.7%
KEV: Not listed

Published

February 13, 2024

Last Modified

April 15, 2026

References (2)

psirt@amdhttps://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-7009
af854a3a-2127-422b-91ae-364da2661108https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-7009

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-284Improper Access Control

Data Freshness Timeline

(refreshed 14× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

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Frequently asked(5)

What is CVE-2023-20587?

CVE-2023-20587 is a high vulnerability published on February 13, 2024. Improper Access Control in System Management Mode (SMM) may allow an attacker access to the SPI flash potentially leading to arbitrary code execution.

When was CVE-2023-20587 disclosed?

CVE-2023-20587 was first published in the National Vulnerability Database on February 13, 2024, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-20587 actively exploited?

CVE-2023-20587 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 10.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-20587?

CVE-2023-20587 has a CVSS v3 base score of 7.1 (NVD).

How do I remediate CVE-2023-20587?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-20587, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2023-20587

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-20587?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)