CVE-2021-26408
Insufficient validation of elliptic curve points in SEV-legacy firmware may compromise SEV-legacy...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2021-26408- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N - CVSS 2.0
- 6.6 Medium
AV:L/AC:L/Au:N/C:C/I:C/A:N - Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2021-26408- Updated
- 2026-11-02
EUVDEUVD-2021-13214 No score
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.
- Record
EUVD-2021-13214- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-q49c-2cmm-mw74
Insufficient validation of elliptic curve points in SEV-legacy firmware may compromise SEV-legacy...
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.
- Record
GHSA-q49c-2cmm-mw74- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N - Updated
- 2026-11-02
Affected products
- amd 1st gen amd epyc™
- amd 2nd gen amd epyc™
- amd epyc 7001 firmware
- amd epyc 7002 firmware
- amd epyc 7232p firmware
- amd epyc 7251 firmware
- amd epyc 7252 firmware
- amd epyc 7262 firmware
- amd epyc 7272 firmware
- amd epyc 7281 firmware
- amd epyc 7282 firmware
- amd epyc 7301 firmware
Show 28 moreShow less
- amd epyc 7302 firmware
- amd epyc 7302p firmware
- amd epyc 7351 firmware
- amd epyc 7351p firmware
- amd epyc 7352 firmware
- amd epyc 7401 firmware
- amd epyc 7401p firmware
- amd epyc 7402 firmware
- amd epyc 7402p firmware
- amd epyc 7451 firmware
- amd epyc 7452 firmware
- amd epyc 7501 firmware
- amd epyc 7502 firmware
- amd epyc 7502p firmware
- amd epyc 7532 firmware
- amd epyc 7542 firmware
- amd epyc 7551 firmware
- amd epyc 7551p firmware
- amd epyc 7552 firmware
- amd epyc 7601 firmware
- amd epyc 7642 firmware
- amd epyc 7662 firmware
- amd epyc 7702 firmware
- amd epyc 7702p firmware
- amd epyc 7742 firmware
- amd epyc 7f32 firmware
- amd epyc 7f52 firmware
- amd epyc 7f72 firmware
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-26408 is a high vulnerability (CVSS 7.1) in Amd 1st Gen Amd Epyc™, published May 10, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.27%, the 19th percentile. No source names a fixed version.