AMD Ryzen/EPYC DXE Driver information disclosure

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
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3.8$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in AMD Ryzen and EPYC. Impacted is an unknown function of the component DXE Driver. Such manipulation leads to information disclosure. This vulnerability is referenced as CVE-2023-20594. The attack can only be performed from a local environment. No exploit is available.

Detailsinfo

A vulnerability was found in AMD Ryzen and EPYC (affected version unknown) and classified as problematic. Affected by this issue is an unknown functionality of the component DXE Driver. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. CVE summarizes:

Improper initialization of variables in the DXE driver may allow a privileged user to leak sensitive information via local access.

The weakness was published 09/20/2023. The advisory is shared for download at amd.com. This vulnerability is handled as CVE-2023-20594 since 10/27/2022. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1592.

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

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-24773). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.8
VulDB Meta Temp Score: 3.8

VulDB Base Score: 3.3
VulDB Temp Score: 3.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.4
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

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 🔍
09/20/2023 +328 days 🔍
09/20/2023 +0 days 🔍
06/28/2025 +647 days 🔍

Sourcesinfo

Advisory: amd.com
Status: Confirmed

CVE: CVE-2023-20594 (🔍)
GCVE (CVE): GCVE-0-2023-20594
GCVE (VulDB): GCVE-100-240080
EUVD: 🔍

Entryinfo

Created: 09/20/2023 21:38
Updated: 06/28/2025 04:22
Changes: 09/20/2023 21:38 (37), 10/13/2023 17:41 (11), 06/28/2025 03:27 (16), 06/28/2025 04:22 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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