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 attacker leaking sensitive information or achieving code execution.

Published: 2023-05-09 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-46760 is rated Moderate Risk (57.1/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 0.78%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2021-46760

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.64% 0.78% +0.13%
2 2026-05-24 0.38% 0.64% +0.27%
3 2026-05-10 — 0.38% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-46760

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2021-46760

Affected software / configurations for CVE-2021-46760

Vendor Product Version Raw CPE
amd ryzen_3945wx_firmware castlepeakwspi-swrx8_1.0.0.9 cpe:2.3:o:amd:ryzen_3945wx_firmware:castlepeakwspi-swrx8_1.0.0.9:*:*:*:*:*:*:*
amd ryzen_3955wx_firmware castlepeakwspi-swrx8_1.0.0.9 cpe:2.3:o:amd:ryzen_3955wx_firmware:castlepeakwspi-swrx8_1.0.0.9:*:*:*:*:*:*:*
amd ryzen_3960x_firmware castlepeakwspi-swrx8_1.0.0.9 cpe:2.3:o:amd:ryzen_3960x_firmware:castlepeakwspi-swrx8_1.0.0.9:*:*:*:*:*:*:*
amd ryzen_3970x_firmware castlepeakwspi-swrx8_1.0.0.9 cpe:2.3:o:amd:ryzen_3970x_firmware:castlepeakwspi-swrx8_1.0.0.9:*:*:*:*:*:*:*
amd ryzen_3975wx_firmware castlepeakwspi-swrx8_1.0.0.9 cpe:2.3:o:amd:ryzen_3975wx_firmware:castlepeakwspi-swrx8_1.0.0.9:*:*:*:*:*:*:*
amd ryzen_3990x_firmware castlepeakwspi-swrx8_1.0.0.9 cpe:2.3:o:amd:ryzen_3990x_firmware:castlepeakwspi-swrx8_1.0.0.9:*:*:*:*:*:*:*
amd ryzen_3995wx_firmware castlepeakwspi-swrx8_1.0.0.9 cpe:2.3:o:amd:ryzen_3995wx_firmware:castlepeakwspi-swrx8_1.0.0.9:*:*:*:*:*:*:*
amd ryzen_3945wx_firmware chagallwspi-swrx8_1.0.0.2 cpe:2.3:o:amd:ryzen_3945wx_firmware:chagallwspi-swrx8_1.0.0.2:*:*:*:*:*:*:*
amd ryzen_3955wx_firmware chagallwspi-swrx8_1.0.0.2 cpe:2.3:o:amd:ryzen_3955wx_firmware:chagallwspi-swrx8_1.0.0.2:*:*:*:*:*:*:*
amd ryzen_3960x_firmware chagallwspi-swrx8_1.0.0.2 cpe:2.3:o:amd:ryzen_3960x_firmware:chagallwspi-swrx8_1.0.0.2:*:*:*:*:*:*:*
amd ryzen_3970x_firmware chagallwspi-swrx8_1.0.0.2 cpe:2.3:o:amd:ryzen_3970x_firmware:chagallwspi-swrx8_1.0.0.2:*:*:*:*:*:*:*
amd ryzen_3975wx_firmware chagallwspi-swrx8_1.0.0.2 cpe:2.3:o:amd:ryzen_3975wx_firmware:chagallwspi-swrx8_1.0.0.2:*:*:*:*:*:*:*
amd ryzen_3990x_firmware chagallwspi-swrx8_1.0.0.2 cpe:2.3:o:amd:ryzen_3990x_firmware:chagallwspi-swrx8_1.0.0.2:*:*:*:*:*:*:*
amd ryzen_3995wx_firmware chagallwspi-swrx8_1.0.0.2 cpe:2.3:o:amd:ryzen_3995wx_firmware:chagallwspi-swrx8_1.0.0.2:*:*:*:*:*:*:*
amd ryzen_3945wx_firmware castlepeakpi-sp3r3_1.0.0.7 cpe:2.3:o:amd:ryzen_3945wx_firmware:castlepeakpi-sp3r3_1.0.0.7:*:*:*:*:*:*:*
amd ryzen_3955wx_firmware castlepeakpi-sp3r3_1.0.0.7 cpe:2.3:o:amd:ryzen_3955wx_firmware:castlepeakpi-sp3r3_1.0.0.7:*:*:*:*:*:*:*
amd ryzen_3960x_firmware castlepeakpi-sp3r3_1.0.0.7 cpe:2.3:o:amd:ryzen_3960x_firmware:castlepeakpi-sp3r3_1.0.0.7:*:*:*:*:*:*:*
amd ryzen_3970x_firmware castlepeakpi-sp3r3_1.0.0.7 cpe:2.3:o:amd:ryzen_3970x_firmware:castlepeakpi-sp3r3_1.0.0.7:*:*:*:*:*:*:*
amd ryzen_3975wx_firmware castlepeakpi-sp3r3_1.0.0.7 cpe:2.3:o:amd:ryzen_3975wx_firmware:castlepeakpi-sp3r3_1.0.0.7:*:*:*:*:*:*:*
amd ryzen_3990x_firmware castlepeakpi-sp3r3_1.0.0.7 cpe:2.3:o:amd:ryzen_3990x_firmware:castlepeakpi-sp3r3_1.0.0.7:*:*:*:*:*:*:*
amd ryzen_3995wx_firmware castlepeakpi-sp3r3_1.0.0.7 cpe:2.3:o:amd:ryzen_3995wx_firmware:castlepeakpi-sp3r3_1.0.0.7:*:*:*:*:*:*:*

References for CVE-2021-46760

cvelogic Threat Intelligence