High severity · published Nov 14, 2023
CVE-2021-46774
Insufficient DRAM address validation in System Management Unit (SMU) may allow an attacker to read/write from/to an invalid DRAM address, potentially resulting in…
7.5
CVSS
0.5%
EPSS
No
On KEV
Description
Insufficient DRAM address validation in System
Management Unit (SMU) may allow an attacker to read/write from/to an invalid
DRAM address, potentially resulting in denial-of-service.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
1G
1st Gen AMD EPYC™ Processors · AMD
various · source: vendor
2G
2nd Gen AMD EPYC™ Processors · AMD
various · source: vendor
3G
3rd Gen AMD EPYC™ Processors · AMD
various · source: vendor
4G
4th Gen AMD EPYC™ Processors · AMD
various · source: vendor
AE
AMD EPYC™ Embedded 3000 · AMD
various; various · source: vendor
AE
AMD EPYC™ Embedded 7002 · AMD
various; various · source: vendor
AE
AMD EPYC™ Embedded 7003 · AMD
various; various · source: vendor
AR
AMD Ryzen™ Embedded 5000 · AMD
various · source: vendor
AR
AMD Ryzen™ 5000 Series Desktop Processors “Vermeer” · AMD
various · source: vendor
AR
AMD Ryzen™ Threadripper™ 3000 Series Processors “Castle Peak” HEDT · AMD
various · source: vendor
AR
AMD Ryzen™ Threadripper™ PRO 3000WX Series Processors “Chagall” WS · AMD
various · source: vendor
AR
AMD Ryzen™ Threadripper™ PRO Processors “Castle Peak” WS SP3 · AMD
various · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-46774
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-46774
Vendor Advisory
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3002
Vendor Advisory
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4002
www.amd.com
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-5001
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