Is there a public exploit for CVE-2023-20577?

No public exploit for CVE-2023-20577 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2023-20577?

CVE-2023-20577 scores CVSS 7.4 (v3.1), rated high. EPSS puts the chance of exploitation in the next 30 days at 0.15%.

What does CVE-2023-20577 affect?

CVE-2023-20577 affects AMD AMD EPYC™ Embedded 3000, AMD Ryzen™ 5000 Series Desktop Processors with Radeon™ Graphics, AMD Ryzen™ 3000 Series Desktop Processors, AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics, AMD Ryzen™ 3000 Series Processors with Radeon™ Graphics, AMD Ryzen™ Embedded 5000.

7.4 High

A heap overflow in SMM module may allow an attacker with access to a second vulnerability that enables writing to SPI flash, potentially…

CVE-2023-20577

A heap overflow in SMM module may allow an attacker with access to a second vulnerability that enables writing to SPI flash, potentially resulting in arbitrary code execution.

Assessment

CVSS: 7.4 (v3.1)
Severity: High
EPSS: 0.15% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 2 September 2026
Last updated: 3 November 2026
Affected: AMD · 2nd Gen AMD EPYC™ Processors · 3rd Gen AMD EPYC™ Processors · 4th Gen AMD EPYC™ Processors · AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics
Assigner: AMD

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

At the source

EUVD (ENISA)

References

https://www.amd.com/en/resources/product-security/bulletin/amd-sb-7009.html

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