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.

Published: 2023-11-14 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-20596 is rated Moderate Risk (60.1/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 0.39%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-20596

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-13 0.53% 0.39% -0.14%
2 2025-11-21 0.55% 0.53% -0.02%
3 2025-11-18 — 0.55% —

Full EPSS history (13 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-20596

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]

Weakness enumeration for CVE-2023-20596

Affected software / configurations for CVE-2023-20596

Vendor Product Version Raw CPE
amd ryzen_7_5700g_firmware < comboam4v2_1.2.0.b cpe:2.3:o:amd:ryzen_7_5700g_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_5700ge_firmware < comboam4v2_1.2.0.b cpe:2.3:o:amd:ryzen_7_5700ge_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_5600g_firmware < comboam4v2_1.2.0.b cpe:2.3:o:amd:ryzen_5_5600g_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_5600ge_firmware < comboam4v2_1.2.0.b cpe:2.3:o:amd:ryzen_5_5600ge_firmware:*:*:*:*:*:*:*:*
amd ryzen_3_5300g_firmware < comboam4v2_1.2.0.b cpe:2.3:o:amd:ryzen_3_5300g_firmware:*:*:*:*:*:*:*:*
amd ryzen_3_5300ge_firmware < comboam4v2_1.2.0.b cpe:2.3:o:amd:ryzen_3_5300ge_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_7950x3d_firmware < comboam5pi_1.0.8.0 cpe:2.3:o:amd:ryzen_9_7950x3d_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_7950x_firmware < comboam5pi_1.0.8.0 cpe:2.3:o:amd:ryzen_9_7950x_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_7900x3d_firmware < comboam5pi_1.0.8.0 cpe:2.3:o:amd:ryzen_9_7900x3d_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_7900_firmware < comboam5pi_1.0.8.0 cpe:2.3:o:amd:ryzen_9_7900_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_7900x_firmware < comboam5pi_1.0.8.0 cpe:2.3:o:amd:ryzen_9_7900x_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_pro_7945_firmware < comboam5pi_1.0.8.0 cpe:2.3:o:amd:ryzen_9_pro_7945_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_7800x3d_firmware < comboam5pi_1.0.8.0 cpe:2.3:o:amd:ryzen_7_7800x3d_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_7700x_firmware < comboam5pi_1.0.8.0 cpe:2.3:o:amd:ryzen_7_7700x_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_7700_firmware < comboam5pi_1.0.8.0 cpe:2.3:o:amd:ryzen_7_7700_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_pro_7745_firmware < comboam5pi_1.0.8.0 cpe:2.3:o:amd:ryzen_7_pro_7745_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_7600x_firmware < comboam5pi_1.0.8.0 cpe:2.3:o:amd:ryzen_5_7600x_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_7600_firmware < comboam5pi_1.0.8.0 cpe:2.3:o:amd:ryzen_5_7600_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_pro_7645_firmware < comboam5pi_1.0.8.0 cpe:2.3:o:amd:ryzen_5_pro_7645_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_7500f_firmware < comboam5pi_1.0.8.0 cpe:2.3:o:amd:ryzen_5_7500f_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_5980hx_firmware < cezannepi-fp6_1.0.0.fa cpe:2.3:o:amd:ryzen_9_5980hx_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_5980hs_firmware < cezannepi-fp6_1.0.0.fa cpe:2.3:o:amd:ryzen_9_5980hs_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_5900hx_firmware < cezannepi-fp6_1.0.0.fa cpe:2.3:o:amd:ryzen_9_5900hx_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_5900hs_firmware < cezannepi-fp6_1.0.0.fa cpe:2.3:o:amd:ryzen_9_5900hs_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_5800h_firmware < cezannepi-fp6_1.0.0.fa cpe:2.3:o:amd:ryzen_7_5800h_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_5800hs_firmware < cezannepi-fp6_1.0.0.fa cpe:2.3:o:amd:ryzen_7_5800hs_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_5825u_firmware < cezannepi-fp6_1.0.0.fa cpe:2.3:o:amd:ryzen_7_5825u_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_5800u_firmware < cezannepi-fp6_1.0.0.fa cpe:2.3:o:amd:ryzen_7_5800u_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_5600h_firmware < cezannepi-fp6_1.0.0.fa cpe:2.3:o:amd:ryzen_5_5600h_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_5600hs_firmware < cezannepi-fp6_1.0.0.fa cpe:2.3:o:amd:ryzen_5_5600hs_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_5625u_firmware < cezannepi-fp6_1.0.0.fa cpe:2.3:o:amd:ryzen_5_5625u_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_5600u_firmware < cezannepi-fp6_1.0.0.fa cpe:2.3:o:amd:ryzen_5_5600u_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_5560u_firmware < cezannepi-fp6_1.0.0.fa cpe:2.3:o:amd:ryzen_5_5560u_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_5500h_firmware < cezannepi-fp6_1.0.0.fa cpe:2.3:o:amd:ryzen_5_5500h_firmware:*:*:*:*:*:*:*:*
amd ryzen_3_5425u_firmware < cezannepi-fp6_1.0.0.fa cpe:2.3:o:amd:ryzen_3_5425u_firmware:*:*:*:*:*:*:*:*
amd ryzen_3_5400u_firmware < cezannepi-fp6_1.0.0.fa cpe:2.3:o:amd:ryzen_3_5400u_firmware:*:*:*:*:*:*:*:*
amd ryzen_3_5125c_firmware < cezannepi-fp6_1.0.0.fa cpe:2.3:o:amd:ryzen_3_5125c_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_6980hx_firmware < rembrandtpi-fp7_1.0.0.9b cpe:2.3:o:amd:ryzen_9_6980hx_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_6980hs_firmware < rembrandtpi-fp7_1.0.0.9b cpe:2.3:o:amd:ryzen_9_6980hs_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_6900hx_firmware < rembrandtpi-fp7_1.0.0.9b cpe:2.3:o:amd:ryzen_9_6900hx_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_6900hs_firmware < rembrandtpi-fp7_1.0.0.9b cpe:2.3:o:amd:ryzen_9_6900hs_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_6800h_firmware < rembrandtpi-fp7_1.0.0.9b cpe:2.3:o:amd:ryzen_7_6800h_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_6800hs_firmware < rembrandtpi-fp7_1.0.0.9b cpe:2.3:o:amd:ryzen_7_6800hs_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_6800u_firmware < rembrandtpi-fp7_1.0.0.9b cpe:2.3:o:amd:ryzen_7_6800u_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_6600h_firmware < rembrandtpi-fp7_1.0.0.9b cpe:2.3:o:amd:ryzen_5_6600h_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_6600hs_firmware < rembrandtpi-fp7_1.0.0.9b cpe:2.3:o:amd:ryzen_5_6600hs_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_6600u_firmware < rembrandtpi-fp7_1.0.0.9b cpe:2.3:o:amd:ryzen_5_6600u_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_7735hs_firmware < rembrandtpi-fp7_1.0.0.9b cpe:2.3:o:amd:ryzen_7_7735hs_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_7736u_firmware < rembrandtpi-fp7_1.0.0.9b cpe:2.3:o:amd:ryzen_7_7736u_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_7735u_firmware < rembrandtpi-fp7_1.0.0.9b cpe:2.3:o:amd:ryzen_7_7735u_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_7535hs_firmware < rembrandtpi-fp7_1.0.0.9b cpe:2.3:o:amd:ryzen_5_7535hs_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_7535u_firmware < rembrandtpi-fp7_1.0.0.9b cpe:2.3:o:amd:ryzen_5_7535u_firmware:*:*:*:*:*:*:*:*
amd ryzen_3_7335u_firmware < rembrandtpi-fp7_1.0.0.9b cpe:2.3:o:amd:ryzen_3_7335u_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_pro_7940hs_firmware < phoenixpi-fp8-fp7_1.0.0.2 cpe:2.3:o:amd:ryzen_9_pro_7940hs_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_7940h_firmware < phoenixpi-fp8-fp7_1.0.0.2 cpe:2.3:o:amd:ryzen_9_7940h_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_pro_7840hs_firmware < phoenixpi-fp8-fp7_1.0.0.2 cpe:2.3:o:amd:ryzen_7_pro_7840hs_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_7840h_firmware < phoenixpi-fp8-fp7_1.0.0.2 cpe:2.3:o:amd:ryzen_7_7840h_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_pro_7840u_firmware < phoenixpi-fp8-fp7_1.0.0.2 cpe:2.3:o:amd:ryzen_7_pro_7840u_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_pro_7640hs_firmware < phoenixpi-fp8-fp7_1.0.0.2 cpe:2.3:o:amd:ryzen_5_pro_7640hs_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_7640h_firmware < phoenixpi-fp8-fp7_1.0.0.2 cpe:2.3:o:amd:ryzen_5_7640h_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_pro_7640u_firmware < phoenixpi-fp8-fp7_1.0.0.2 cpe:2.3:o:amd:ryzen_5_pro_7640u_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_pro_7545u_firmware < phoenixpi-fp8-fp7_1.0.0.2 cpe:2.3:o:amd:ryzen_5_pro_7545u_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_pro_7540u_firmware < phoenixpi-fp8-fp7_1.0.0.2 cpe:2.3:o:amd:ryzen_5_pro_7540u_firmware:*:*:*:*:*:*:*:*
amd ryzen_3_7440u_firmware < phoenixpi-fp8-fp7_1.0.0.2 cpe:2.3:o:amd:ryzen_3_7440u_firmware:*:*:*:*:*:*:*:*

References for CVE-2023-20596

cvelogic Threat Intelligence