Critical severity · published May 9, 2023
CVE-2021-46760
A malicious or compromised UApp or ABL can send a malformed system call to the bootloader, which may result in an out-of-bounds memory access that may potentially lead to an…
9.8
CVSS
0.8%
EPSS
No
On KEV
Description
A malicious or compromised UApp or ABL can send
a malformed system call to the bootloader, which may result in an out-of-bounds
memory access that may potentially lead to an attacker leaking sensitive
information or achieving code execution.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 56% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
3G
3rd Gen AMD Ryzen™ Threadripper™ Processors “Castle Peak” HEDT · AMD
various · source: vendor
RT
Ryzen™ Threadripper™ PRO Processors “Castle Peak” WS · AMD
various · source: vendor
R3
Ryzen 3945wx Firmware · Amd
castlepeakwspi-swrx8_1.0.0.9; chagallwspi-swrx8_1.0.0.2; castlepeakpi-sp3r3_1.0.0.7 · source: NVD
R3
Ryzen 3955wx Firmware · Amd
castlepeakwspi-swrx8_1.0.0.9; chagallwspi-swrx8_1.0.0.2; castlepeakpi-sp3r3_1.0.0.7 · source: NVD
R3
Ryzen 3960x Firmware · Amd
castlepeakwspi-swrx8_1.0.0.9; chagallwspi-swrx8_1.0.0.2; castlepeakpi-sp3r3_1.0.0.7 · source: NVD
R3
Ryzen 3970x Firmware · Amd
castlepeakwspi-swrx8_1.0.0.9; chagallwspi-swrx8_1.0.0.2; castlepeakpi-sp3r3_1.0.0.7 · source: NVD
R3
Ryzen 3975wx Firmware · Amd
castlepeakwspi-swrx8_1.0.0.9; chagallwspi-swrx8_1.0.0.2; castlepeakpi-sp3r3_1.0.0.7 · source: NVD
R3
Ryzen 3990x Firmware · Amd
castlepeakwspi-swrx8_1.0.0.9; chagallwspi-swrx8_1.0.0.2; castlepeakpi-sp3r3_1.0.0.7 · source: NVD
R3
Ryzen 3995wx Firmware · Amd
castlepeakwspi-swrx8_1.0.0.9; chagallwspi-swrx8_1.0.0.2; castlepeakpi-sp3r3_1.0.0.7 · source: NVD
Affected product
3G
3rd Gen AMD Ryzen™ Threadripper™ Processors “Castle Peak” HEDT
AMD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-46760
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-46760
Vendor Advisory
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001
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