CVE-2023-20594

Memory Safety in Amd Ryzen 3 3100 Firmware comboam4pi_1.0.0.9 … comboam4v2pi_1.2.0.8

Memory Safety

Published

20 September 2023

Modified

27 June 2025

Patch / advisory

View advisory

CVSS Score v3.1 4.4

Click a component to see what it means

Raw vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

EPSS Score 0.0018 7th percentile

Risk Priority 34 floored blend · peak EPSS

Summary

CVE-2023-20594 is a medium-severity Access of Uninitialized Pointer (CWE-824) vulnerability in Amd Ryzen 3 3100 Firmware. Its CVSS base score is 4.4 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 7th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2023-24773

Vulnerability Data

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

CWE(s): CWE-824 CWE-665

Related Threats

MITRE ATT&CK Enterprise Techniques

T1068 Exploitation for Privilege Escalation Privilege Escalation

Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.

attack.mitre.org →

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

T1203 Exploitation for Client Execution Execution

Adversaries may exploit software vulnerabilities in client applications to execute code.

attack.mitre.org →

T1210 Exploitation of Remote Services Lateral Movement

Adversaries may exploit remote services to gain unauthorized access to internal systems once inside of a network.

attack.mitre.org →

T1211 Exploitation for Stealth Stealth

Adversaries may exploit vulnerabilities to evade detection by hiding activity, suppressing logging, or operating within trusted or unmonitored components.

attack.mitre.org →

T1212 Exploitation for Credential Access Credential Access

Adversaries may exploit software vulnerabilities in an attempt to collect credentials.

attack.mitre.org →

Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-20597Same product: Amd Ryzen 3100

CVE-2023-20524Same product: Amd Epyc 72F3

CVE-2023-20520Same product: Amd Epyc 72F3

CVE-2023-20555Same product: Amd Ryzen 3 3300

CVE-2024-21980Same product: Amd Epyc 72F3

CVE-2023-31355Same product: Amd Epyc 72F3

CVE-2025-29933Same vendor: Amd

CVE-2023-31347Same product: Amd Epyc 72F3

CVE-2023-20529Same product: Amd Epyc 7003

CVE-2023-20531Same product: Amd Epyc 7003

Affected Assets

amd

epyc 7003 firmware

milanpi_1.0.0.a

amd

epyc 72f3 firmware

milanpi_1.0.0.a

amd

epyc 7313 firmware

milanpi_1.0.0.a

amd

epyc 7313p firmware

milanpi_1.0.0.a

amd

epyc 7343 firmware

milanpi_1.0.0.a

amd

epyc 7373x firmware

milanpi_1.0.0.a

amd

epyc 73f3 firmware

milanpi_1.0.0.a

amd

epyc 7443 firmware

milanpi_1.0.0.a

amd

epyc 7413 firmware

milanpi_1.0.0.a

amd

epyc 7443p firmware

milanpi_1.0.0.a

+115 more product configuration(s) — see NVD for full list

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SC-4 Information in Shared System Resources

addresses: CWE-665

Ensures shared resources are explicitly initialized or cleared on allocation, preventing exposure of prior contents to new users or processes.

SI-14 Non-persistence

addresses: CWE-665

Mandates that every instance begins in a known (presumably clean) state, eliminating reliance on residual or uninitialized state left by prior executions.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match

prevents

Secure SDLC practices directly prevent uninitialized pointer bugs via coding standards, analysis, and reviews, but eliminating this single weakness only partially fulfills the broader control.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match

finds

Security testing can detect uninitialized pointer usage before release.

A.8.9 Configuration management mostly match

prevents

Configuration management can enforce secure defaults and initialization settings but is not the primary control for code-level initialization.

A.8.25 Secure development life cycle partial match

prevents

Secure development life cycle mandates practices that reduce uninitialized pointer defects.

A.8.26 Application security requirements partial match

degrades

Application security requirements can specify pointer initialization rules.