CVE-2023-20596
CRITICALCVSS 9.8/10EPSS 0.96%
Last modified
CVE-2023-20596 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. . EPSS estimates a 0.96% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Amd | Ryzen 7 5700g Firmware | < comboam4v2_1.2.0.b |
| Amd | Ryzen 7 5700ge Firmware | < comboam4v2_1.2.0.b |
| Amd | Ryzen 5 5600g Firmware | < comboam4v2_1.2.0.b |
| Amd | Ryzen 5 5600ge Firmware | < comboam4v2_1.2.0.b |
| Amd | Ryzen 3 5300g Firmware | < comboam4v2_1.2.0.b |
| Amd | Ryzen 3 5300ge Firmware | < comboam4v2_1.2.0.b |
| Amd | Ryzen 9 7950x3d Firmware | < comboam5pi_1.0.8.0 |
| Amd | Ryzen 9 7950x Firmware | < comboam5pi_1.0.8.0 |
| Amd | Ryzen 9 7900x3d Firmware | < comboam5pi_1.0.8.0 |
| Amd | Ryzen 9 7900 Firmware | < comboam5pi_1.0.8.0 |
| Amd | Ryzen 9 7900x Firmware | < comboam5pi_1.0.8.0 |
| Amd | Ryzen 9 Pro 7945 Firmware | < comboam5pi_1.0.8.0 |
| Amd | Ryzen 7 7800x3d Firmware | < comboam5pi_1.0.8.0 |
| Amd | Ryzen 7 7700x Firmware | < comboam5pi_1.0.8.0 |
| Amd | Ryzen 7 7700 Firmware | < comboam5pi_1.0.8.0 |
| Amd | Ryzen 7 Pro 7745 Firmware | < comboam5pi_1.0.8.0 |
| Amd | Ryzen 5 7600x Firmware | < comboam5pi_1.0.8.0 |
| Amd | Ryzen 5 7600 Firmware | < comboam5pi_1.0.8.0 |
| Amd | Ryzen 5 Pro 7645 Firmware | < comboam5pi_1.0.8.0 |
| Amd | Ryzen 5 7500f Firmware | < comboam5pi_1.0.8.0 |
| Amd | Ryzen 9 5980hx Firmware | < cezannepi-fp6_1.0.0.fa |
| Amd | Ryzen 9 5980hs Firmware | < cezannepi-fp6_1.0.0.fa |
| Amd | Ryzen 9 5900hx Firmware | < cezannepi-fp6_1.0.0.fa |
| Amd | Ryzen 9 5900hs Firmware | < cezannepi-fp6_1.0.0.fa |
| Amd | Ryzen 7 5800h Firmware | < cezannepi-fp6_1.0.0.fa |
| Amd | Ryzen 7 5800hs Firmware | < cezannepi-fp6_1.0.0.fa |
| Amd | Ryzen 7 5825u Firmware | < cezannepi-fp6_1.0.0.fa |
| Amd | Ryzen 7 5800u Firmware | < cezannepi-fp6_1.0.0.fa |
| Amd | Ryzen 5 5600h Firmware | < cezannepi-fp6_1.0.0.fa |
| Amd | Ryzen 5 5600hs Firmware | < cezannepi-fp6_1.0.0.fa |
| Amd | Ryzen 5 5625u Firmware | < cezannepi-fp6_1.0.0.fa |
| Amd | Ryzen 5 5600u Firmware | < cezannepi-fp6_1.0.0.fa |
| Amd | Ryzen 5 5560u Firmware | < cezannepi-fp6_1.0.0.fa |
| Amd | Ryzen 5 5500h Firmware | < cezannepi-fp6_1.0.0.fa |
| Amd | Ryzen 3 5425u Firmware | < cezannepi-fp6_1.0.0.fa |
| Amd | Ryzen 3 5400u Firmware | < cezannepi-fp6_1.0.0.fa |
| Amd | Ryzen 3 5125c Firmware | < cezannepi-fp6_1.0.0.fa |
| Amd | Ryzen 9 6980hx Firmware | < rembrandtpi-fp7_1.0.0.9b |
| Amd | Ryzen 9 6980hs Firmware | < rembrandtpi-fp7_1.0.0.9b |
| Amd | Ryzen 9 6900hx Firmware | < rembrandtpi-fp7_1.0.0.9b |
| Amd | Ryzen 9 6900hs Firmware | < rembrandtpi-fp7_1.0.0.9b |
| Amd | Ryzen 7 6800h Firmware | < rembrandtpi-fp7_1.0.0.9b |
| Amd | Ryzen 7 6800hs Firmware | < rembrandtpi-fp7_1.0.0.9b |
| Amd | Ryzen 7 6800u Firmware | < rembrandtpi-fp7_1.0.0.9b |
| Amd | Ryzen 5 6600h Firmware | < rembrandtpi-fp7_1.0.0.9b |
| Amd | Ryzen 5 6600hs Firmware | < rembrandtpi-fp7_1.0.0.9b |
| Amd | Ryzen 5 6600u Firmware | < rembrandtpi-fp7_1.0.0.9b |
| Amd | Ryzen 7 7735hs Firmware | < rembrandtpi-fp7_1.0.0.9b |
| Amd | Ryzen 7 7736u Firmware | < rembrandtpi-fp7_1.0.0.9b |
| Amd | Ryzen 7 7735u Firmware | < rembrandtpi-fp7_1.0.0.9b |
Showing 50 of 64 affected configurations. See NVD for the full list.
References
Timeline
- Published
- Last Modified
- Status
- Modified
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 score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.96% probability of exploitation in the next 30 days.
How do I fix CVE-2023-20596?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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Are you affected by CVE-2023-20596?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST