Is CVE-2023-20533 in the CISA KEV catalog?

No. CVE-2023-20533 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-20533?

CVE-2023-20533 has a CVSS v3 base score of 6.1 (MEDIUM).

What is the EPSS score for CVE-2023-20533?

CVE-2023-20533 has an EPSS score of 0.50% (39th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-20533?

Upgrade epyc 7203 firmware to milanpi_1.0.0.5 or later. Fixes are available for 68 affected products.

CVE & CISA-KEV Catalog

CVE-2023-20533

MEDIUM

6.1

CVSS v3

NVD

Description

Insufficient DRAM address validation in System Management Unit (SMU) may allow an attacker to read/write from/to an invalid DRAM address, potentially resulting in denial-of-service.

How to fix

Remediation Available

epyc 7203 firmwareNVD

Affected:< milanpi_1.0.0.5Fixed in:milanpi_1.0.0.5CVE-2023-20533derived from NVD

epyc 7203p firmwareNVD

Affected:< milanpi_1.0.0.5Fixed in:milanpi_1.0.0.5CVE-2023-20533derived from NVD

epyc 7232p firmwareNVD

Affected:< romepi_1.0.0.dFixed in:romepi_1.0.0.dCVE-2023-20533derived from NVD

epyc 7252 firmwareNVD

Affected:< romepi_1.0.0.dFixed in:romepi_1.0.0.dCVE-2023-20533derived from NVD

epyc 7262 firmwareNVD

Affected:< romepi_1.0.0.dFixed in:romepi_1.0.0.dCVE-2023-20533derived from NVD

epyc 7272 firmwareNVD

Affected:< romepi_1.0.0.dFixed in:romepi_1.0.0.dCVE-2023-20533derived from NVD

epyc 7282 firmwareNVD

Affected:< romepi_1.0.0.dFixed in:romepi_1.0.0.dCVE-2023-20533derived from NVD

epyc 72f3 firmwareNVD

Affected:< milanpi_1.0.0.5Fixed in:milanpi_1.0.0.5CVE-2023-20533derived from NVD

epyc 7302 firmwareNVD

Affected:< romepi_1.0.0.dFixed in:romepi_1.0.0.dCVE-2023-20533derived from NVD

epyc 7302p firmwareNVD

Affected:< romepi_1.0.0.dFixed in:romepi_1.0.0.dCVE-2023-20533derived from NVD

epyc 7303 firmwareNVD

Affected:< milanpi_1.0.0.5Fixed in:milanpi_1.0.0.5CVE-2023-20533derived from NVD

epyc 7303p firmwareNVD

Affected:< milanpi_1.0.0.5Fixed in:milanpi_1.0.0.5CVE-2023-20533derived from NVD

epyc 7313 firmwareNVD

Affected:< milanpi_1.0.0.5Fixed in:milanpi_1.0.0.5CVE-2023-20533derived from NVD

epyc 7313p firmwareNVD

Affected:< milanpi_1.0.0.5Fixed in:milanpi_1.0.0.5CVE-2023-20533derived from NVD

epyc 7343 firmwareNVD

Affected:< milanpi_1.0.0.5Fixed in:milanpi_1.0.0.5CVE-2023-20533derived from NVD

epyc 7352 firmwareNVD

Affected:< romepi_1.0.0.dFixed in:romepi_1.0.0.dCVE-2023-20533derived from NVD

epyc 7373x firmwareNVD

Affected:< milanpi_1.0.0.5Fixed in:milanpi_1.0.0.5CVE-2023-20533derived from NVD

epyc 73f3 firmwareNVD

Affected:< milanpi_1.0.0.5Fixed in:milanpi_1.0.0.5CVE-2023-20533derived from NVD

epyc 7402 firmwareNVD

Affected:< romepi_1.0.0.dFixed in:romepi_1.0.0.dCVE-2023-20533derived from NVD

epyc 7402p firmwareNVD

Affected:< romepi_1.0.0.dFixed in:romepi_1.0.0.dCVE-2023-20533derived from NVD

epyc 7413 firmwareNVD

Affected:< milanpi_1.0.0.5Fixed in:milanpi_1.0.0.5CVE-2023-20533derived from NVD

epyc 7443 firmwareNVD

Affected:< milanpi_1.0.0.5Fixed in:milanpi_1.0.0.5CVE-2023-20533derived from NVD

epyc 7443p firmwareNVD

Affected:< milanpi_1.0.0.5Fixed in:milanpi_1.0.0.5CVE-2023-20533derived from NVD

epyc 7452 firmwareNVD

Affected:< romepi_1.0.0.dFixed in:romepi_1.0.0.dCVE-2023-20533derived from NVD

epyc 7453 firmwareNVD

Affected:< milanpi_1.0.0.5Fixed in:milanpi_1.0.0.5CVE-2023-20533derived from NVD

epyc 7473x firmwareNVD

Affected:< milanpi_1.0.0.5Fixed in:milanpi_1.0.0.5CVE-2023-20533derived from NVD

epyc 74f3 firmwareNVD

Affected:< milanpi_1.0.0.5Fixed in:milanpi_1.0.0.5CVE-2023-20533derived from NVD

epyc 7502 firmwareNVD

Affected:< romepi_1.0.0.dFixed in:romepi_1.0.0.dCVE-2023-20533derived from NVD

epyc 7502p firmwareNVD

Affected:< romepi_1.0.0.dFixed in:romepi_1.0.0.dCVE-2023-20533derived from NVD

epyc 7513 firmwareNVD

Affected:< milanpi_1.0.0.5Fixed in:milanpi_1.0.0.5CVE-2023-20533derived from NVD

epyc 7532 firmwareNVD

Affected:< romepi_1.0.0.dFixed in:romepi_1.0.0.dCVE-2023-20533derived from NVD

epyc 7542 firmwareNVD

Affected:< romepi_1.0.0.dFixed in:romepi_1.0.0.dCVE-2023-20533derived from NVD

epyc 7543 firmwareNVD

Affected:< milanpi_1.0.0.5Fixed in:milanpi_1.0.0.5CVE-2023-20533derived from NVD

epyc 7543p firmwareNVD

Affected:< milanpi_1.0.0.5Fixed in:milanpi_1.0.0.5CVE-2023-20533derived from NVD

epyc 7552 firmwareNVD

Affected:< romepi_1.0.0.dFixed in:romepi_1.0.0.dCVE-2023-20533derived from NVD

epyc 7573x firmwareNVD

Affected:< milanpi_1.0.0.5Fixed in:milanpi_1.0.0.5CVE-2023-20533derived from NVD

epyc 75f3 firmwareNVD

Affected:< milanpi_1.0.0.5Fixed in:milanpi_1.0.0.5CVE-2023-20533derived from NVD

epyc 7642 firmwareNVD

Affected:< romepi_1.0.0.dFixed in:romepi_1.0.0.dCVE-2023-20533derived from NVD

epyc 7643 firmwareNVD

Affected:< milanpi_1.0.0.5Fixed in:milanpi_1.0.0.5CVE-2023-20533derived from NVD

epyc 7643p firmwareNVD

Affected:< milanpi_1.0.0.5Fixed in:milanpi_1.0.0.5CVE-2023-20533derived from NVD

epyc 7662 firmwareNVD

Affected:< romepi_1.0.0.dFixed in:romepi_1.0.0.dCVE-2023-20533derived from NVD

epyc 7663 firmwareNVD

Affected:< milanpi_1.0.0.5Fixed in:milanpi_1.0.0.5CVE-2023-20533derived from NVD

epyc 7663p firmwareNVD

Affected:< milanpi_1.0.0.5Fixed in:milanpi_1.0.0.5CVE-2023-20533derived from NVD

epyc 7702 firmwareNVD

Affected:< romepi_1.0.0.dFixed in:romepi_1.0.0.dCVE-2023-20533derived from NVD

epyc 7702p firmwareNVD

Affected:< romepi_1.0.0.dFixed in:romepi_1.0.0.dCVE-2023-20533derived from NVD

epyc 7713 firmwareNVD

Affected:< milanpi_1.0.0.5Fixed in:milanpi_1.0.0.5CVE-2023-20533derived from NVD

epyc 7713p firmwareNVD

Affected:< milanpi_1.0.0.5Fixed in:milanpi_1.0.0.5CVE-2023-20533derived from NVD

epyc 7742 firmwareNVD

Affected:< romepi_1.0.0.dFixed in:romepi_1.0.0.dCVE-2023-20533derived from NVD

epyc 7763 firmwareNVD

Affected:< milanpi_1.0.0.5Fixed in:milanpi_1.0.0.5CVE-2023-20533derived from NVD

epyc 7773x firmwareNVD

Affected:< milanpi_1.0.0.5Fixed in:milanpi_1.0.0.5CVE-2023-20533derived from NVD

epyc 7f32 firmwareNVD

Affected:< romepi_1.0.0.dFixed in:romepi_1.0.0.dCVE-2023-20533derived from NVD

epyc 7f52 firmwareNVD

Affected:< romepi_1.0.0.dFixed in:romepi_1.0.0.dCVE-2023-20533derived from NVD

epyc 7f72 firmwareNVD

Affected:< romepi_1.0.0.dFixed in:romepi_1.0.0.dCVE-2023-20533derived from NVD

epyc 7h12 firmwareNVD

Affected:< romepi_1.0.0.dFixed in:romepi_1.0.0.dCVE-2023-20533derived from NVD

ryzen 5 5500 firmwareNVD

Affected:< comboam4v2_pi_1.2.0.9Fixed in:comboam4v2_pi_1.2.0.9CVE-2023-20533derived from NVD

ryzen 5 5600 firmwareNVD

Affected:< comboam4v2_pi_1.2.0.9Fixed in:comboam4v2_pi_1.2.0.9CVE-2023-20533derived from NVD

ryzen 5 5600x firmwareNVD

Affected:< comboam4v2_pi_1.2.0.9Fixed in:comboam4v2_pi_1.2.0.9CVE-2023-20533derived from NVD

ryzen 7 5700x firmwareNVD

Affected:< comboam4v2_pi_1.2.0.9Fixed in:comboam4v2_pi_1.2.0.9CVE-2023-20533derived from NVD

ryzen 7 5800 firmwareNVD

Affected:< comboam4v2_pi_1.2.0.9Fixed in:comboam4v2_pi_1.2.0.9CVE-2023-20533derived from NVD

ryzen 7 5800x3d firmwareNVD

Affected:< comboam4v2_pi_1.2.0.9Fixed in:comboam4v2_pi_1.2.0.9CVE-2023-20533derived from NVD

ryzen 7 5800x firmwareNVD

Affected:< comboam4v2_pi_1.2.0.9Fixed in:comboam4v2_pi_1.2.0.9CVE-2023-20533derived from NVD

ryzen 9 5900 firmwareNVD

Affected:< comboam4v2_pi_1.2.0.9Fixed in:comboam4v2_pi_1.2.0.9CVE-2023-20533derived from NVD

ryzen 9 5900x firmwareNVD

Affected:< comboam4v2_pi_1.2.0.9Fixed in:comboam4v2_pi_1.2.0.9CVE-2023-20533derived from NVD

ryzen 9 5950x firmwareNVD

Affected:< comboam4v2_pi_1.2.0.9Fixed in:comboam4v2_pi_1.2.0.9CVE-2023-20533derived from NVD

ryzen threadripper 3960x firmwareNVD

Affected:< castlepeakpi-sp3r3_1.0.0.8Fixed in:castlepeakpi-sp3r3_1.0.0.8CVE-2023-20533derived from NVD

ryzen threadripper 3970x firmwareNVD

Affected:< castlepeakpi-sp3r3_1.0.0.8Fixed in:castlepeakpi-sp3r3_1.0.0.8CVE-2023-20533derived from NVD

ryzen threadripper 3990x firmwareNVD

Affected:< castlepeakpi-sp3r3_1.0.0.8Fixed in:castlepeakpi-sp3r3_1.0.0.8CVE-2023-20533derived from NVD

ryzen threadripper pro 3995wx firmwareNVD

Affected:< chagallwspi-swrx8_1.0.0.5Fixed in:chagallwspi-swrx8_1.0.0.5CVE-2023-20533derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityHigh

Privileges RequiredHigh

User InteractionNone

ScopeChanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityHigh

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

Exploit Intelligence

0.50%probability of exploitation in 30 days

39thpercentile

Low risk: more likely to be exploited than 39% of all known CVEs.

References

Vendor Advisory2

Other references1

amd.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.