CVE-2021-26408 json
Insufficient validation of elliptic curve points in SEV-legacy firmware may compromise SEV-legacy guest migration potentially resulting in…
published 2022-05-10 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-13214
- cvss
- 7.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 19%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- AMD 1st Gen AMD EPYC™ NaplesPI-SP3_1.0.0.G
- AMD 2nd Gen AMD EPYC™ RomePI-SP3_1.0.0.C
Exploit prediction
0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
| NVD | 2.0 | 6.6 | AV:L/AC:L/Au:N/C:C/I:C/A:N |
Affected products
- AMD 1st Gen AMD EPYC™
- AMD 2nd Gen AMD EPYC™
References
-
amd.com
/en/corporate/product-security/bulletin/amd-sb-1021
vendor-advisory
Sources
- CVE List CVE-2021-26408
- NVD CVE-2021-26408
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