CVE-2023-20596

CVE-2023-20596 is a critical-severity vulnerability in Amd Ryzen 7 5700g Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

• Severity: Critical (CVSS 3.x base score 9.8)
• EPSS exploit prediction: 1% (57th percentile)
• Actively exploited: Not listed in CISA KEV
• Affected product: Amd Ryzen 7 5700g Firmware
• Published: 2023-11-14
• Last modified: 2026-06-17

Description

Improper input validation in the SMM Supervisor may allow an attacker with a compromised SMI handler to gain Ring0 access potentially leading to arbitrary code execution.

Frequently asked questions

What is CVE-2023-20596?

Improper input validation in the SMM Supervisor may allow an attacker with a compromised SMI handler to gain Ring0 access potentially leading to arbitrary code execution.

How severe is CVE-2023-20596?

CVE-2023-20596 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-20596 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-20596?

CVE-2023-20596 primarily affects Amd Ryzen 7 5700g Firmware. In total, 64 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-20596?

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

When was CVE-2023-20596 published?

CVE-2023-20596 was published on 2023-11-14 and last updated on 2026-06-17.

References

• https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-7011

Affected products (64)

• cpe:2.3:o:amd:ryzen_7_5700g_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_7_5700ge_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_5600g_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_5600ge_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_3_5300g_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_3_5300ge_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_9_7950x3d_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_9_7950x_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_9_7900x3d_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_9_7900_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_9_7900x_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_9_pro_7945_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_7_7800x3d_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_7_7700x_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_7_7700_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_7_pro_7745_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_7600x_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_7600_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_pro_7645_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_7500f_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_9_5980hx_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_9_5980hs_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_9_5900hx_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_9_5900hs_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_7_5800h_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_7_5800hs_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_7_5825u_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_7_5800u_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_5600h_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_5600hs_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_5625u_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_5600u_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_5560u_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_5500h_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_3_5425u_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_3_5400u_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_3_5125c_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_9_6980hx_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_9_6980hs_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_9_6900hx_firmware:*:*:*:*:*:*:*:*

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