CVE-2023-20577
Received Received - Intake

Heap Overflow in AMD SMM Module

Publication date: 2026-09-02

Last updated on: 2026-09-02

Assigner: Advanced Micro Devices Inc.

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.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-09-02
Last Modified
2026-09-02
Generated
2026-09-03
AI Q&A
2026-09-02
EPSS Evaluated
N/A
NVD
CVE-2023-20577
EUVD
EUVD-2023-60617

Affected Vendors & Products

Currently, no data is known.

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-121 A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This is a heap overflow vulnerability in an SMM module. It may allow an attacker who already has access to write to SPI flash to execute arbitrary code. The vulnerability requires a second vulnerability to enable the SPI flash write capability.

Impact Analysis

An attacker could exploit this to execute arbitrary code on your system, potentially gaining full control. This could lead to data theft, system compromise, or disruption of services.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, violating GDPR and HIPAA requirements for data protection and security. Compliance may be compromised if systems are not patched.

Mitigation Strategies

Apply security updates from AMD to patch the SMM module heap overflow. Ensure SPI flash write access is restricted to prevent exploitation of this vulnerability.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2023-20577. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart