CVE-2021-46749
HIGHCVSS 7.5/10EPSS 0.62%
Last modified
CVE-2021-46749 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Insufficient bounds checking in ASP (AMD Secure Processor) may allow for an out of bounds read in SMI (System Management Interface) mailbox checksum calculation triggering a data abort, resulting in a potential denial of service. . EPSS estimates a 0.62% chance of exploitation in the next 30 days.
Description
Insufficient bounds checking in ASP (AMD Secure Processor) may allow for an out of bounds read in SMI (System Management Interface) mailbox checksum calculation triggering a data abort, resulting in a potential denial of service.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Amd | Ryzen 5300g Firmware | cezannepi-fp6_1.0.0.8 |
| Amd | Ryzen 5300ge Firmware | cezannepi-fp6_1.0.0.8 |
| Amd | Ryzen 5500 Firmware | cezannepi-fp6_1.0.0.8 |
| Amd | Ryzen 5600 Firmware | cezannepi-fp6_1.0.0.8 |
| Amd | Ryzen 5600g Firmware | cezannepi-fp6_1.0.0.8 |
| Amd | Ryzen 5600ge Firmware | cezannepi-fp6_1.0.0.8 |
| Amd | Ryzen 5600x Firmware | cezannepi-fp6_1.0.0.8 |
| Amd | Ryzen 5700g Firmware | cezannepi-fp6_1.0.0.8 |
| Amd | Ryzen 5700ge Firmware | cezannepi-fp6_1.0.0.8 |
| Amd | Ryzen 5700x Firmware | cezannepi-fp6_1.0.0.8 |
| Amd | Ryzen 5800 Firmware | cezannepi-fp6_1.0.0.8 |
| Amd | Ryzen 5800x3d Firmware | cezannepi-fp6_1.0.0.8 |
| Amd | Ryzen 5800x Firmware | cezannepi-fp6_1.0.0.8 |
| Amd | Ryzen 5900 Firmware | cezannepi-fp6_1.0.0.8 |
| Amd | Ryzen 5900x Firmware | cezannepi-fp6_1.0.0.8 |
| Amd | Ryzen 5945wx Firmware | cezannepi-fp6_1.0.0.8 |
| Amd | Ryzen 5950x Firmware | cezannepi-fp6_1.0.0.8 |
| Amd | Ryzen 5955wx Firmware | cezannepi-fp6_1.0.0.8 |
| Amd | Ryzen 5965wx Firmware | cezannepi-fp6_1.0.0.8 |
| Amd | Ryzen 5975wx Firmware | cezannepi-fp6_1.0.0.8 |
| Amd | Ryzen 5995wx Firmware | cezannepi-fp6_1.0.0.8 |
| Amd | Ryzen 3100 Firmware | comboam4pi_1.0.0.9 |
| Amd | Ryzen 3100 Firmware | comboam4v2_pi_1.2.0.5 |
| Amd | Ryzen 3100 Firmware | comboam4v2_pi_1.2.0.8 |
| Amd | Ryzen 3100 Firmware | picassopi-fp5_1.0.0.e |
| Amd | Ryzen 3100 Firmware | renoirpi-fp6_1.0.0.8 |
| Amd | Ryzen 3300x Firmware | comboam4pi_1.0.0.9 |
| Amd | Ryzen 3300x Firmware | comboam4v2_pi_1.2.0.5 |
| Amd | Ryzen 3300x Firmware | comboam4v2_pi_1.2.0.8 |
| Amd | Ryzen 3300x Firmware | picassopi-fp5_1.0.0.e |
| Amd | Ryzen 3300x Firmware | renoirpi-fp6_1.0.0.8 |
| Amd | Ryzen 3500 Firmware | comboam4pi_1.0.0.9 |
| Amd | Ryzen 3500 Firmware | comboam4v2_pi_1.2.0.5 |
| Amd | Ryzen 3500 Firmware | comboam4v2_pi_1.2.0.8 |
| Amd | Ryzen 3500 Firmware | picassopi-fp5_1.0.0.e |
| Amd | Ryzen 3500 Firmware | renoirpi-fp6_1.0.0.8 |
| Amd | Ryzen 3500x Firmware | comboam4pi_1.0.0.9 |
| Amd | Ryzen 3500x Firmware | comboam4v2_pi_1.2.0.5 |
| Amd | Ryzen 3500x Firmware | comboam4v2_pi_1.2.0.8 |
| Amd | Ryzen 3500x Firmware | picassopi-fp5_1.0.0.e |
| Amd | Ryzen 3500x Firmware | renoirpi-fp6_1.0.0.8 |
| Amd | Ryzen 3600 Firmware | comboam4pi_1.0.0.9 |
| Amd | Ryzen 3600 Firmware | comboam4v2_pi_1.2.0.5 |
| Amd | Ryzen 3600 Firmware | comboam4v2_pi_1.2.0.8 |
| Amd | Ryzen 3600 Firmware | picassopi-fp5_1.0.0.e |
| Amd | Ryzen 3600 Firmware | renoirpi-fp6_1.0.0.8 |
| Amd | Ryzen 3600x Firmware | comboam4pi_1.0.0.9 |
| Amd | Ryzen 3600x Firmware | comboam4v2_pi_1.2.0.5 |
| Amd | Ryzen 3600x Firmware | comboam4v2_pi_1.2.0.8 |
| Amd | Ryzen 3600x Firmware | picassopi-fp5_1.0.0.e |
Showing 50 of 168 affected configurations. See NVD for the full list.
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-46749?
Insufficient bounds checking in ASP (AMD Secure
Processor) may allow for an out of bounds read in SMI (System Management
Interface) mailbox checksum calculation triggering a data abort, resulting in a
potential denial of service.
How severe is CVE-2021-46749?
CVE-2021-46749 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.62% probability of exploitation in the next 30 days.
How do I fix CVE-2021-46749?
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.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-46749?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST