High severity · published May 10, 2022
CVE-2021-26408
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…
7.1
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 19% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
1G
1st Gen AMD EPYC™ · AMD
before NaplesPI-SP3_1.0.0.G · source: vendor
2G
2nd Gen AMD EPYC™ · AMD
before RomePI-SP3_1.0.0.C · source: vendor
E7
Epyc 7001 Firmware · Amd
before naplespi-sp3_1.0.0.g · source: NVD
E7
Epyc 7002 Firmware · Amd
before romepi-sp3_1.0.0.c · source: NVD
E7
Epyc 7232p Firmware · Amd
before romepi-sp3_1.0.0.c · source: NVD
E7
Epyc 7251 Firmware · Amd
before naplespi-sp3_1.0.0.g · source: NVD
E7
Epyc 7252 Firmware · Amd
before romepi-sp3_1.0.0.c · source: NVD
E7
Epyc 7262 Firmware · Amd
before romepi-sp3_1.0.0.c · source: NVD
E7
Epyc 7272 Firmware · Amd
before romepi-sp3_1.0.0.c · source: NVD
E7
Epyc 7281 Firmware · Amd
before naplespi-sp3_1.0.0.g · source: NVD
E7
Epyc 7282 Firmware · Amd
before romepi-sp3_1.0.0.c · source: NVD
E7
Epyc 7301 Firmware · Amd
before naplespi-sp3_1.0.0.g · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-26408
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-26408
Vendor Advisory
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1021
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