Critical severity · published May 9, 2023
CVE-2021-46762
Insufficient input validation in the SMU may allow an attacker to corrupt SMU SRAM potentially leading to a loss of integrity or denial of service
9.1
CVSS
0.3%
EPSS
No
On KEV
Description
Insufficient input validation in the SMU may
allow an attacker to corrupt SMU SRAM potentially leading to a loss of
integrity or denial of service.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 28% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
E7
Epyc 7232p Firmware · Amd
romepi_1.0.0.e · source: NVD
E7
Epyc 7252 Firmware · Amd
romepi_1.0.0.e · source: NVD
E7
Epyc 7262 Firmware · Amd
romepi_1.0.0.e · source: NVD
E7
Epyc 7272 Firmware · Amd
romepi_1.0.0.e · source: NVD
E7
Epyc 7282 Firmware · Amd
romepi_1.0.0.e · source: NVD
E7
Epyc 72f3 Firmware · Amd
milanpi_1.0.0.9 · source: NVD
E7
Epyc 7302 Firmware · Amd
romepi_1.0.0.e · source: NVD
E7
Epyc 7302p Firmware · Amd
romepi_1.0.0.e · source: NVD
E7
Epyc 7313 Firmware · Amd
milanpi_1.0.0.9 · source: NVD
E7
Epyc 7313p Firmware · Amd
milanpi_1.0.0.9 · source: NVD
E7
Epyc 7343 Firmware · Amd
milanpi_1.0.0.9 · source: NVD
E7
Epyc 7352 Firmware · Amd
romepi_1.0.0.e · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-46762
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-46762
Vendor Advisory
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3001
www.amd.com
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-5001
More from Epyc 7232p Firmware
9.8
CVE-2023-20520
Improper access control settings in ASP Bootloader may allow an attacker to corrupt the return address causing a stack-based buffer overrun potentially leading to arbitrary code…
9.8
CVE-2021-26379
Insufficient input validation of mailbox data in the SMU may allow an attacker to coerce the SMU to corrupt SMRAM, potentially leading to a loss of integrity and privilege…
9.1
CVE-2021-46756
Insufficient validation of inputs in SVC_MAP_USER_STACK in the ASP (AMD Secure Processor) bootloader may allow an attacker with a malicious Uapp or ABL to send malformed or…
8.8
CVE-2021-46769
Insufficient syscall input validation in the ASP Bootloader may allow a privileged attacker to execute arbitrary DMA copies, which can lead to code execution
8.4
CVE-2021-26340
A malicious hypervisor in conjunction with an unprivileged attacker process inside an SEV/SEV-ES guest VM may fail to flush the Translation Lookaside Buffer (TLB) resulting in…