AMD CPU SMU memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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4.0$0-$5k0.00

Summaryinfo

A vulnerability was found in AMD CPU. It has been rated as critical. This vulnerability affects unknown code of the component SMU. Performing a manipulation results in memory corruption. This vulnerability is identified as CVE-2023-20528. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as critical, was found in AMD CPU (Chip Software) (version unknown). This affects an unknown function of the component SMU. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Insufficient input validation in the SMU may allow a physical attacker to exfiltrate SMU memory contents over the I2C bus potentially leading to a loss of confidentiality.

The weakness was released 01/11/2023. The advisory is shared at amd.com. This vulnerability is uniquely identified as CVE-2023-20528 since 10/27/2022. Neither technical details nor an exploit are publicly available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 4.0

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 2.4
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Partially
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/27/2022 🔍
01/11/2023 +76 days 🔍
01/11/2023 +0 days 🔍
04/07/2025 +817 days 🔍

Sourcesinfo

Advisory: amd.com
Status: Confirmed

CVE: CVE-2023-20528 (🔍)
GCVE (CVE): GCVE-0-2023-20528
GCVE (VulDB): GCVE-100-218001

Entryinfo

Created: 01/11/2023 14:57
Updated: 04/07/2025 23:17
Changes: 01/11/2023 14:57 (38), 02/01/2023 15:39 (11), 04/07/2025 23:17 (16)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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