AMD AGESA Firmware SPI ROM Data Authenticity Bypass
CVE-2023-20576 Published on September 2, 2026

Insufficient Verification of Data Authenticity in AGESA may allow an attacker to update SPI ROM data potentially resulting in denial of service or privilege escalation.

NVD

Vulnerability Analysis

CVE-2023-20576 is exploitable with local system access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity, and a high impact on availability.

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

Weakness Type

Insufficient Verification of Data Authenticity

The software does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.


Affected Versions

AMD Ryzen™ 3000 Series Desktop Processors: AMD Ryzen™ 5000 Series Desktop Processors: AMD Ryzen™ 5000 Series Desktop Processors with Radeon™ Graphics: AMD Ryzen™ 7000 Series Processors: AMD Ryzen™ 4000 Series Desktop Processors with Radeon™ Graphics: AMD Ryzen™ Threadripper™ PRO 5000WX Processors: AMD Ryzen™ 7020 Series Processors with Radeon™ Graphics: AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics: AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics: AMD Ryzen™ 7040 Series Processors with Radeon™ Graphics: AMD Ryzen™ 7045 Series Mobile Processors: AMD Ryzen™ Embedded 5000: AMD Ryzen™ Embedded V3000: