CVE-2021-26396
MEDIUMCVSS 4.4/10EPSS 0.11%
Last modified
CVE-2021-26396 is a medium-severity vulnerability rated 4.4/10 on the CVSS scale. Insufficient validation of address mapping to IO in ASP (AMD Secure Processor) may result in a loss of memory integrity in the SNP guest. . EPSS estimates a 0.11% chance of exploitation in the next 30 days.
Description
Insufficient validation of address mapping to IO in ASP (AMD Secure Processor) may result in a loss of memory integrity in the SNP guest.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Amd | Epyc 7003 Firmware | < milanpi-sp3_1.0.0.9 |
| Amd | Epyc 72f3 Firmware | < milanpi-sp3_1.0.0.9 |
| Amd | Epyc 7313 Firmware | < milanpi-sp3_1.0.0.9 |
| Amd | Epyc 7313p Firmware | < milanpi-sp3_1.0.0.9 |
| Amd | Epyc 7343 Firmware | < milanpi-sp3_1.0.0.9 |
| Amd | Epyc 7373x Firmware | < milanpi-sp3_1.0.0.9 |
| Amd | Epyc 73f3 Firmware | < milanpi-sp3_1.0.0.9 |
| Amd | Epyc 7413 Firmware | < milanpi-sp3_1.0.0.9 |
| Amd | Epyc 7443 Firmware | < milanpi-sp3_1.0.0.9 |
| Amd | Epyc 7443p Firmware | < milanpi-sp3_1.0.0.9 |
| Amd | Epyc 7453 Firmware | < milanpi-sp3_1.0.0.9 |
| Amd | Epyc 74f3 Firmware | < milanpi-sp3_1.0.0.9 |
| Amd | Epyc 7513 Firmware | < milanpi-sp3_1.0.0.9 |
| Amd | Epyc 7543 Firmware | < milanpi-sp3_1.0.0.9 |
| Amd | Epyc 7543p Firmware | < milanpi-sp3_1.0.0.9 |
| Amd | Epyc 7573x Firmware | < milanpi-sp3_1.0.0.9 |
| Amd | Epyc 75f3 Firmware | < milanpi-sp3_1.0.0.9 |
| Amd | Epyc 7643 Firmware | < milanpi-sp3_1.0.0.9 |
| Amd | Epyc 7663 Firmware | < milanpi-sp3_1.0.0.9 |
| Amd | Epyc 7713 Firmware | < milanpi-sp3_1.0.0.9 |
| Amd | Epyc 7713p Firmware | < milanpi-sp3_1.0.0.9 |
| Amd | Epyc 7743 Firmware | < milanpi-sp3_1.0.0.9 |
| Amd | Epyc 7763 Firmware | < milanpi-sp3_1.0.0.9 |
| Amd | Epyc 7773x Firmware | < milanpi-sp3_1.0.0.9 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-26396?
Insufficient validation of address mapping to IO in ASP (AMD Secure Processor) may result in a loss of memory integrity in the SNP guest.
How severe is CVE-2021-26396?
CVE-2021-26396 has a CVSS score of 4.4/10 (MEDIUM severity). The EPSS model estimates a 0.11% probability of exploitation in the next 30 days.
How do I fix CVE-2021-26396?
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.
Are you affected by CVE-2021-26396?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST