CVE & CISA-KEV Catalog

CVE-2021-26408

HIGH
7.1
CVSS v3
NVD

Description

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.

How to fix

Remediation Available
epyc 7001 firmwareNVD
Affected:< naplespi-sp3_1.0.0.gFixed in:naplespi-sp3_1.0.0.gCVE-2021-26408derived from NVD
epyc 7002 firmwareNVD
Affected:< romepi-sp3_1.0.0.cFixed in:romepi-sp3_1.0.0.cCVE-2021-26408derived from NVD
epyc 7232p firmwareNVD
Affected:< romepi-sp3_1.0.0.cFixed in:romepi-sp3_1.0.0.cCVE-2021-26408derived from NVD
epyc 7251 firmwareNVD
Affected:< naplespi-sp3_1.0.0.gFixed in:naplespi-sp3_1.0.0.gCVE-2021-26408derived from NVD
epyc 7252 firmwareNVD
Affected:< romepi-sp3_1.0.0.cFixed in:romepi-sp3_1.0.0.cCVE-2021-26408derived from NVD
epyc 7262 firmwareNVD
Affected:< romepi-sp3_1.0.0.cFixed in:romepi-sp3_1.0.0.cCVE-2021-26408derived from NVD
epyc 7272 firmwareNVD
Affected:< romepi-sp3_1.0.0.cFixed in:romepi-sp3_1.0.0.cCVE-2021-26408derived from NVD
epyc 7281 firmwareNVD
Affected:< naplespi-sp3_1.0.0.gFixed in:naplespi-sp3_1.0.0.gCVE-2021-26408derived from NVD
epyc 7282 firmwareNVD
Affected:< romepi-sp3_1.0.0.cFixed in:romepi-sp3_1.0.0.cCVE-2021-26408derived from NVD
epyc 7301 firmwareNVD
Affected:< naplespi-sp3_1.0.0.gFixed in:naplespi-sp3_1.0.0.gCVE-2021-26408derived from NVD
epyc 7302 firmwareNVD
Affected:< romepi-sp3_1.0.0.cFixed in:romepi-sp3_1.0.0.cCVE-2021-26408derived from NVD
epyc 7302p firmwareNVD
Affected:< romepi-sp3_1.0.0.cFixed in:romepi-sp3_1.0.0.cCVE-2021-26408derived from NVD
epyc 7351 firmwareNVD
Affected:< naplespi-sp3_1.0.0.gFixed in:naplespi-sp3_1.0.0.gCVE-2021-26408derived from NVD
epyc 7351p firmwareNVD
Affected:< naplespi-sp3_1.0.0.gFixed in:naplespi-sp3_1.0.0.gCVE-2021-26408derived from NVD
epyc 7352 firmwareNVD
Affected:< romepi-sp3_1.0.0.cFixed in:romepi-sp3_1.0.0.cCVE-2021-26408derived from NVD
epyc 7401 firmwareNVD
Affected:< naplespi-sp3_1.0.0.gFixed in:naplespi-sp3_1.0.0.gCVE-2021-26408derived from NVD
epyc 7401p firmwareNVD
Affected:< naplespi-sp3_1.0.0.gFixed in:naplespi-sp3_1.0.0.gCVE-2021-26408derived from NVD
epyc 7402 firmwareNVD
Affected:< romepi-sp3_1.0.0.cFixed in:romepi-sp3_1.0.0.cCVE-2021-26408derived from NVD
epyc 7402p firmwareNVD
Affected:< romepi-sp3_1.0.0.cFixed in:romepi-sp3_1.0.0.cCVE-2021-26408derived from NVD
epyc 7451 firmwareNVD
Affected:< naplespi-sp3_1.0.0.gFixed in:naplespi-sp3_1.0.0.gCVE-2021-26408derived from NVD
epyc 7452 firmwareNVD
Affected:< romepi-sp3_1.0.0.cFixed in:romepi-sp3_1.0.0.cCVE-2021-26408derived from NVD
epyc 7501 firmwareNVD
Affected:< naplespi-sp3_1.0.0.gFixed in:naplespi-sp3_1.0.0.gCVE-2021-26408derived from NVD
epyc 7502 firmwareNVD
Affected:< romepi-sp3_1.0.0.cFixed in:romepi-sp3_1.0.0.cCVE-2021-26408derived from NVD
epyc 7502p firmwareNVD
Affected:< romepi-sp3_1.0.0.cFixed in:romepi-sp3_1.0.0.cCVE-2021-26408derived from NVD
epyc 7532 firmwareNVD
Affected:< romepi-sp3_1.0.0.cFixed in:romepi-sp3_1.0.0.cCVE-2021-26408derived from NVD
epyc 7542 firmwareNVD
Affected:< romepi-sp3_1.0.0.cFixed in:romepi-sp3_1.0.0.cCVE-2021-26408derived from NVD
epyc 7551 firmwareNVD
Affected:< naplespi-sp3_1.0.0.gFixed in:naplespi-sp3_1.0.0.gCVE-2021-26408derived from NVD
epyc 7551p firmwareNVD
Affected:< naplespi-sp3_1.0.0.gFixed in:naplespi-sp3_1.0.0.gCVE-2021-26408derived from NVD
epyc 7552 firmwareNVD
Affected:< romepi-sp3_1.0.0.cFixed in:romepi-sp3_1.0.0.cCVE-2021-26408derived from NVD
epyc 7601 firmwareNVD
Affected:< naplespi-sp3_1.0.0.gFixed in:naplespi-sp3_1.0.0.gCVE-2021-26408derived from NVD
epyc 7642 firmwareNVD
Affected:< romepi-sp3_1.0.0.cFixed in:romepi-sp3_1.0.0.cCVE-2021-26408derived from NVD
epyc 7662 firmwareNVD
Affected:< romepi-sp3_1.0.0.cFixed in:romepi-sp3_1.0.0.cCVE-2021-26408derived from NVD
epyc 7702 firmwareNVD
Affected:< romepi-sp3_1.0.0.cFixed in:romepi-sp3_1.0.0.cCVE-2021-26408derived from NVD
epyc 7702p firmwareNVD
Affected:< romepi-sp3_1.0.0.cFixed in:romepi-sp3_1.0.0.cCVE-2021-26408derived from NVD
epyc 7742 firmwareNVD
Affected:< romepi-sp3_1.0.0.cFixed in:romepi-sp3_1.0.0.cCVE-2021-26408derived from NVD
epyc 7f32 firmwareNVD
Affected:< romepi-sp3_1.0.0.cFixed in:romepi-sp3_1.0.0.cCVE-2021-26408derived from NVD
epyc 7f52 firmwareNVD
Affected:< romepi-sp3_1.0.0.cFixed in:romepi-sp3_1.0.0.cCVE-2021-26408derived from NVD
epyc 7f72 firmwareNVD
Affected:< romepi-sp3_1.0.0.cFixed in:romepi-sp3_1.0.0.cCVE-2021-26408derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityNone

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Exploit Intelligence

0.26%probability of exploitation in 30 days
17thpercentile

Low risk: more likely to be exploited than 17% of all known CVEs.

References

Vendor Advisory1
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CVE-2021-26408 severity badge

Markdown

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.