Home/CVE/Improper initialization of variables in the DXE driver may allow a privileged user to leak sensitive information via loc
CVE

CVE-2023-20594

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

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

MEDIUM · CVSS 4.4 EPSS 0.00055
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-665Improper Initialization
CWE-824Access of Uninitialized Pointer
▤

Affected Products & Versions

42
amd epyc 7003 firmwareall versions
amd epyc 72f3 firmwareall versions
amd epyc 7313 firmwareall versions
amd epyc 7313p firmwareall versions
amd epyc 7343 firmwareall versions
amd epyc 7373x firmwareall versions
amd epyc 73f3 firmwareall versions
amd epyc 7443 firmwareall versions
▣

Scoring & Timeline

4.4
MEDIUM · CVSS v3.1 · psirt@amd.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD20 Sep 2023 · 06:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4007Vendor Advisory
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