How severe is CVE-2023-20594?

CVE-2023-20594 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2023-20594 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-20594?

CVE-2023-20594 primarily affects Amd Epyc 7003 Firmware. In total, 213 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-20594?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-20594 published?

CVE-2023-20594 was published on 2023-09-20 and last updated on 2026-06-17.

CVE-2023-20594

CVE-2023-20594 is a medium-severity vulnerability in Amd Epyc 7003 Firmware with a CVSS 3.x base score of 4.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-665.

Key facts

Severity: Medium (CVSS 3.x base score 4.4)
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-665
Affected product: Amd Epyc 7003 Firmware
Published: 2023-09-20
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2023-20594?: Improper initialization of variables in the DXE driver may allow a privileged user to leak sensitive information via local access.
How severe is CVE-2023-20594?: CVE-2023-20594 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2023-20594 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-20594?: CVE-2023-20594 primarily affects Amd Epyc 7003 Firmware. In total, 213 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-20594?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-20594 published?: CVE-2023-20594 was published on 2023-09-20 and last updated on 2026-06-17.

References

https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4007

Affected products (213)

cpe:2.3:o:amd:epyc_7003_firmware:milanpi_1.0.0.a:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_72f3_firmware:milanpi_1.0.0.a:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7313_firmware:milanpi_1.0.0.a:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7313p_firmware:milanpi_1.0.0.a:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7343_firmware:milanpi_1.0.0.a:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7373x_firmware:milanpi_1.0.0.a:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_73f3_firmware:milanpi_1.0.0.a:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7443_firmware:milanpi_1.0.0.a:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7413_firmware:milanpi_1.0.0.a:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7443p_firmware:milanpi_1.0.0.a:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7453_firmware:milanpi_1.0.0.a:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_74f3_firmware:milanpi_1.0.0.a:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7513_firmware:milanpi_1.0.0.a:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7543_firmware:milanpi_1.0.0.a:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7543p_firmware:milanpi_1.0.0.a:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7573x_firmware:milanpi_1.0.0.a:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_75f3_firmware:milanpi_1.0.0.a:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7643_firmware:milanpi_1.0.0.a:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7663_firmware:milanpi_1.0.0.a:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7713_firmware:milanpi_1.0.0.a:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7713p_firmware:milanpi_1.0.0.a:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7743_firmware:milanpi_1.0.0.a:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7763_firmware:milanpi_1.0.0.a:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7773x_firmware:milanpi_1.0.0.a:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_3100_firmware:comboam4pi_1.0.0.9:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_3100_firmware:comboam4v2pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_3200g_firmware:comboam4pi_1.0.0.9:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_3200g_firmware:comboam4v2pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_3200ge_firmware:comboam4pi_1.0.0.9:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_3200ge_firmware:comboam4v2pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_3200u_firmware:comboam4pi_1.0.0.9:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_3200u_firmware:comboam4v2pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_3250c_firmware:comboam4pi_1.0.0.9:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_3250c_firmware:comboam4v2pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_3250u_firmware:comboam4pi_1.0.0.9:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_3250u_firmware:comboam4v2pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_3300_firmware:comboam4pi_1.0.0.9:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_3300_firmware:comboam4v2pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_3300g_firmware:comboam4pi_1.0.0.9:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_3300g_firmware:comboam4v2pi_1.2.0.8:*:*:*:*:*:*:*

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