High severity · published Jul 14, 2022
CVE-2021-26384
A malformed SMI (System Management Interface) command may allow an attacker to establish a corrupted SMI Trigger Info data structure, potentially leading to out-of-bounds memory…
7.8
CVSS
0.2%
EPSS
No
On KEV
Description
A malformed SMI (System Management Interface) command may allow an attacker to establish a corrupted SMI Trigger Info data structure, potentially leading to out-of-bounds memory reads and writes when triggering an SMI resulting in a potential loss of resources.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 10% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AG
Athlon Gold 3150u Firmware · Amd
All versions, or not specified · source: NVD
AS
Athlon Silver 3050u Firmware · Amd
All versions, or not specified · source: NVD
R3
Ryzen 3 2200u Firmware · Amd
before comboam4v2_pi_1.2.0.6c · source: NVD
R3
Ryzen 3 2300u Firmware · Amd
before comboam4v2_pi_1.2.0.6c · source: NVD
R3
Ryzen 3 3200u Firmware · Amd
All versions, or not specified · source: NVD
R3
Ryzen 3 3250u Firmware · Amd
All versions, or not specified · source: NVD
R3
Ryzen 3 3300u Firmware · Amd
All versions, or not specified · source: NVD
R3
Ryzen 3 3350u Firmware · Amd
All versions, or not specified · source: NVD
R3
Ryzen 3 3450u Firmware · Amd
All versions, or not specified · source: NVD
R3
Ryzen 3 3500c Firmware · Amd
All versions, or not specified · source: NVD
R3
Ryzen 3 3500u Firmware · Amd
All versions, or not specified · source: NVD
R3
Ryzen 3 3550h Firmware · Amd
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-26384
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-26384
Vendor Advisory
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1027
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