CVE-2023-20577

HIGH

7.4

CVSS Score

Published: September 2, 2026 at 07:57 PM UTC

Updated: September 4, 2026 at 08:17 PM UTC

Products not identified yet

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Severity

HIGH7.4

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

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.

Affected

We have no canonical product record for this CVE. The source names may not have matched any product.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord

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

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.4HIGHAMD

Attack Vector: LOCAL
Complexity: HIGH
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusAWAITING ANALYSIS

CWE

CWE-121

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