Home/CVE/Insufficient validation of elliptic curve points in SEV-legacy firmware may compromise SEV-legacy guest migration potent
CVE

CVE-2021-26408

Insufficient validation of elliptic curve points in SEV-legacy firmware may compromise SEV-legacy guest migration potent

Insufficient validation of elliptic curve points in SEV-legacy firmware may compromise SEV-legacy guest migration potentially resulting in loss of guest's integrity or confidentiality.

HIGH · CVSS 7.1 EPSS 0.00129
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
▤

Affected Products & Versions

38
amd epyc 7002 firmware< romepi-sp3_1.0.0.c
amd epyc 7001 firmware< naplespi-sp3_1.0.0.g
amd epyc 7232p firmware< romepi-sp3_1.0.0.c
amd epyc 7252 firmware< romepi-sp3_1.0.0.c
amd epyc 7262 firmware< romepi-sp3_1.0.0.c
amd epyc 7272 firmware< romepi-sp3_1.0.0.c
amd epyc 7282 firmware< romepi-sp3_1.0.0.c
amd epyc 7302 firmware< romepi-sp3_1.0.0.c
▣

Scoring & Timeline

7.1
HIGH · CVSS v3.1 · psirt@amd.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD10 May 2022 · 07:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
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References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1021Vendor Advisory
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