Medium severity · published Jan 10, 2023
CVE-2021-46768
Insufficient input validation in SEV firmware may allow an attacker to perform out-of-bounds memory reads within the ASP boot loader, potentially leading to a denial of service
5.5
CVSS
0.2%
EPSS
No
On KEV
Description
Insufficient input validation in SEV firmware may allow an attacker to perform out-of-bounds memory reads within the ASP boot loader, potentially leading to a denial of service.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 7% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
2G
2nd Gen EPYC · AMD
various · source: vendor
3G
3rd Gen EPYC · AMD
various · source: vendor
MF
Milanpi Firmware · Amd
before 1.0.0.5 · source: NVD
RF
Romepi Firmware · Amd
before 1.0.0.d · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-46768
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-46768
Vendor Advisory
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032
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