What is CVE-2023-20577?

CVE-2023-20577 is a high-severity vulnerability, classified under Stack-based Buffer Overflow. CVSS score: 7.4/10. Published 2026-09-02.

How severe is CVE-2023-20577?

High severity. CVSS v3 base score is 7.4 out of 10.

CVE-2023-20577

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.

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

psirt@amd.com

Frequently asked questions

What is CVE-2023-20577?: CVE-2023-20577 is a high-severity vulnerability, classified under Stack-based Buffer Overflow. CVSS score: 7.4/10. Published 2026-09-02.
How severe is CVE-2023-20577?: High severity. CVSS v3 base score is 7.4 out of 10.