Security Resilience

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 vectorCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
EPSS Score 0.0019 8th percentile
Risk Priority 34 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

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 Steganography (T1001.002); ranked at the 8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

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-824CWE-665

Related Threats

MITRE ATT&CK Enterprise Techniques

T1001.002 Steganography Command And Control
Adversaries may use steganographic techniques to hide command and control traffic to make detection efforts more difficult.
attack.mitre.org →
T1003.003 NTDS Credential Access
Adversaries may attempt to access or create a copy of the Active Directory domain database in order to steal credential information, as well as obtain other information about domain members such as devices, users, and access rights.
attack.mitre.org →
T1003.004 LSA Secrets Credential Access
Adversaries with SYSTEM access to a host may attempt to access Local Security Authority (LSA) secrets, which can contain a variety of different credential materials, such as credentials for service accounts.
attack.mitre.org →
T1003.006 DCSync Credential Access
Adversaries may attempt to access credentials and other sensitive information by abusing a Windows Domain Controller's application programming interface (API)(Citation: Microsoft DRSR Dec 2017) (Citation: Microsoft GetNCCChanges) (Citati…
attack.mitre.org →
T1003.007 Proc Filesystem Credential Access
Adversaries may gather credentials from the proc filesystem or `/proc`.
attack.mitre.org →
T1003.008 /etc/passwd and /etc/shadow Credential Access
Adversaries may attempt to dump the contents of <code>/etc/passwd</code> and <code>/etc/shadow</code> to enable offline password cracking.
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-2023-31355Same product: Amd Epyc 72F3
CVE-2024-21980Same product: Amd Epyc 72F3
CVE-2023-20555Same product: Amd Ryzen 3 3300
CVE-2025-29933Same vendor: Amd
CVE-2023-31307Same vendor: Amd
CVE-2023-20591Same product: Amd Epyc 72F3
CVE-2025-48511Same vendor: Amd

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 partial match
blocks

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.5.14 Information transfer partial match
removes
A.5.15 Access control partial match
removes
A.5.16 Identity management partial match
removes
A.5.17 Authentication information partial match
removes
A.5.18 Access rights partial match
removes
A.5.32 Intellectual property rights partial match
removes

Hardening callouts derived

DISA STIG baselines are authored against specific weaknesses. Where this CVE cites a broad weakness class, the mapping is not asserted at that abstraction (owner ruling, 2026-09-25: grade only at Base and below), so no rule is shown here rather than a rule shown against the wrong grain.

  • No fine-grained STIG row for CWE-665, a class-level weakness. Rules are authored against its narrower children: CWE-770.

References