How severe is CVE-2022-23820?

CVE-2022-23820 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-23820 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-23820?

CVE-2022-23820 primarily affects Amd Ryzen 9 3900 Firmware. In total, 123 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-23820?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2022-23820 published?

CVE-2022-23820 was published on 2023-11-14 and last updated on 2026-06-17.

CVE-2022-23820

CVE-2022-23820 is a high-severity vulnerability in Amd Ryzen 9 3900 Firmware with a CVSS 3.x base score of 7.5. 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-20.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Amd Ryzen 9 3900 Firmware
Published: 2023-11-14
Last modified: 2026-06-17

Description

Failure to validate the AMD SMM communication buffer may allow an attacker to corrupt the SMRAM potentially leading to arbitrary code execution.

Frequently asked questions

What is CVE-2022-23820?: Failure to validate the AMD SMM communication buffer may allow an attacker to corrupt the SMRAM potentially leading to arbitrary code execution.
How severe is CVE-2022-23820?: CVE-2022-23820 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-23820 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-23820?: CVE-2022-23820 primarily affects Amd Ryzen 9 3900 Firmware. In total, 123 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-23820?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2022-23820 published?: CVE-2022-23820 was published on 2023-11-14 and last updated on 2026-06-17.

References

Affected products (123)

cpe:2.3:o:amd:ryzen_9_3900_firmware:comboam4_pi_1.0.0.9:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_9_3900_firmware:comboam4_v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_9_3900x_firmware:comboam4_pi_1.0.0.9:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_9_3900x_firmware:comboam4_v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_9_3900xt_firmware:comboam4_pi_1.0.0.9:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_9_3900xt_firmware:comboam4_v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_9_3950x_firmware:comboam4_pi_1.0.0.9:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_9_3950x_firmware:comboam4_v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_7_3700x_firmware:comboam4_pi_1.0.0.9:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_7_3700x_firmware:comboam4_v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_7_3800x_firmware:comboam4_pi_1.0.0.9:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_7_3800x_firmware:comboam4_v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_7_3800xt_firmware:comboam4_pi_1.0.0.9:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_7_3800xt_firmware:comboam4_v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_3500_firmware:comboam4_pi_1.0.0.9:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_3500_firmware:comboam4_v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_3500x_firmware:comboam4_pi_1.0.0.9:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_3500x_firmware:comboam4_v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_3600_firmware:comboam4_pi_1.0.0.9:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_3600_firmware:comboam4_v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_3600x_firmware:comboam4_pi_1.0.0.9:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_3600x_firmware:comboam4_v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_3600xt_firmware:comboam4_pi_1.0.0.9:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_3600xt_firmware:comboam4_v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_3100_firmware:comboam4_pi_1.0.0.9:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_3100_firmware:comboam4_v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_3300x_firmware:comboam4_pi_1.0.0.9:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_3300x_firmware:comboam4_v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_9_5900_firmware:comboam4_v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_9_5900x_firmware:comboam4_v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_9_5950x_firmware:comboam4_v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_9_pro_5945_firmware:comboam4_v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_7_pro_5845_firmware:comboam4_v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_7_5800_firmware:comboam4_v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_7_5800x_firmware:comboam4_v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_7_5700x_firmware:comboam4_v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_5600_firmware:comboam4_v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_5600x_firmware:comboam4_v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_56003xd_firmware:comboam4_v2_pi_1.2.0.8:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_pro_5645_firmware:comboam4_v2_pi_1.2.0.8:*:*:*:*:*:*:*

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CVE-2023-20558 — High (CVSS 8.8): Insufficient control flow management in AmdCpmOemSmm may allow a privileged attacker to tamper with the SMM handler…
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