CVE-2021-46766

Improper clearing of sensitive data in the ASP Bootloader may expose secret keys to a privileged attacker accessing ASP SRAM, potentially leading to a loss of confidentiality.

Published: 2023-11-14 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-46766 is rated Low Risk (11.6/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.02%). Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.

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-2021-46766

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 2025-11-21 0.05% 0.02% -0.03%
2 2025-11-18 0.04% 0.05% +0.01%
3 2023-11-15 — 0.04% —

Full EPSS history (3 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-46766

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
2.5 3.1 LOW
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 0.8 1.4 [email protected]
5.5 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
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:L)
A normal user session is enough; they don’t have to be admin.
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:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 1.8 3.6 [email protected]

Weakness enumeration for CVE-2021-46766

OS Trackers for CVE-2021-46766

vendor priority summary link
suse high — https://www.suse.com/security/cve/CVE-2021-46766/

Affected software / configurations for CVE-2021-46766

Vendor Product Version Raw CPE
amd epyc_9654p_firmware < genoapi_1.0.0.4 cpe:2.3:o:amd:epyc_9654p_firmware:*:*:*:*:*:*:*:*
amd epyc_9654_firmware < genoapi_1.0.0.4 cpe:2.3:o:amd:epyc_9654_firmware:*:*:*:*:*:*:*:*
amd epyc_9634_firmware < genoapi_1.0.0.4 cpe:2.3:o:amd:epyc_9634_firmware:*:*:*:*:*:*:*:*
amd epyc_9554p_firmware < genoapi_1.0.0.4 cpe:2.3:o:amd:epyc_9554p_firmware:*:*:*:*:*:*:*:*
amd epyc_9554_firmware < genoapi_1.0.0.4 cpe:2.3:o:amd:epyc_9554_firmware:*:*:*:*:*:*:*:*
amd epyc_9534_firmware < genoapi_1.0.0.4 cpe:2.3:o:amd:epyc_9534_firmware:*:*:*:*:*:*:*:*
amd epyc_9474f_firmware < genoapi_1.0.0.4 cpe:2.3:o:amd:epyc_9474f_firmware:*:*:*:*:*:*:*:*
amd epyc_9454p_firmware < genoapi_1.0.0.4 cpe:2.3:o:amd:epyc_9454p_firmware:*:*:*:*:*:*:*:*
amd epyc_9454_firmware < genoapi_1.0.0.4 cpe:2.3:o:amd:epyc_9454_firmware:*:*:*:*:*:*:*:*
amd epyc_9374f_firmware < genoapi_1.0.0.4 cpe:2.3:o:amd:epyc_9374f_firmware:*:*:*:*:*:*:*:*
amd epyc_9354p_firmware < genoapi_1.0.0.4 cpe:2.3:o:amd:epyc_9354p_firmware:*:*:*:*:*:*:*:*
amd epyc_9354_firmware < genoapi_1.0.0.4 cpe:2.3:o:amd:epyc_9354_firmware:*:*:*:*:*:*:*:*
amd epyc_9334_firmware < genoapi_1.0.0.4 cpe:2.3:o:amd:epyc_9334_firmware:*:*:*:*:*:*:*:*
amd epyc_9274f_firmware < genoapi_1.0.0.4 cpe:2.3:o:amd:epyc_9274f_firmware:*:*:*:*:*:*:*:*
amd epyc_9254_firmware < genoapi_1.0.0.4 cpe:2.3:o:amd:epyc_9254_firmware:*:*:*:*:*:*:*:*
amd epyc_9224_firmware < genoapi_1.0.0.4 cpe:2.3:o:amd:epyc_9224_firmware:*:*:*:*:*:*:*:*
amd epyc_9174f_firmware < genoapi_1.0.0.4 cpe:2.3:o:amd:epyc_9174f_firmware:*:*:*:*:*:*:*:*
amd epyc_9124_firmware < genoapi_1.0.0.4 cpe:2.3:o:amd:epyc_9124_firmware:*:*:*:*:*:*:*:*
amd epyc_9684x_firmware < genoapi_1.0.0.4 cpe:2.3:o:amd:epyc_9684x_firmware:*:*:*:*:*:*:*:*
amd epyc_9384x_firmware < genoapi_1.0.0.4 cpe:2.3:o:amd:epyc_9384x_firmware:*:*:*:*:*:*:*:*
amd epyc_9184x_firmware < genoapi_1.0.0.4 cpe:2.3:o:amd:epyc_9184x_firmware:*:*:*:*:*:*:*:*
amd epyc_9754_firmware < genoapi_1.0.0.4 cpe:2.3:o:amd:epyc_9754_firmware:*:*:*:*:*:*:*:*
amd epyc_9754s_firmware < genoapi_1.0.0.4 cpe:2.3:o:amd:epyc_9754s_firmware:*:*:*:*:*:*:*:*
amd epyc_9734_firmware < genoapi_1.0.0.4 cpe:2.3:o:amd:epyc_9734_firmware:*:*:*:*:*:*:*:*
amd ryzen_threadripper_pro_3995wx_firmware < chagallwspi-swrx8_1.0.0.5 cpe:2.3:o:amd:ryzen_threadripper_pro_3995wx_firmware:*:*:*:*:*:*:*:*
amd ryzen_threadripper_pro_3975wx_firmware < chagallwspi-swrx8_1.0.0.5 cpe:2.3:o:amd:ryzen_threadripper_pro_3975wx_firmware:*:*:*:*:*:*:*:*
amd ryzen_threadripper_pro_3955wx_firmware < chagallwspi-swrx8_1.0.0.5 cpe:2.3:o:amd:ryzen_threadripper_pro_3955wx_firmware:*:*:*:*:*:*:*:*
amd ryzen_threadripper_pro_3945wx_firmware < chagallwspi-swrx8_1.0.0.5 cpe:2.3:o:amd:ryzen_threadripper_pro_3945wx_firmware:*:*:*:*:*:*:*:*

References for CVE-2021-46766

cvelogic Threat Intelligence