CVE-2021-46758

Insufficient validation of SPI flash addresses in the ASP (AMD Secure Processor) bootloader may allow an attacker to read data in memory mapped beyond SPI flash resulting in a potential loss of availability and integrity.

Published: 2023-11-14 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-46758 is rated Low Risk (33/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.33%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

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-2021-46758

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 0.10% 0.33% +0.22%
2 2025-03-30 0.24% 0.10% -0.14%
3 2025-03-29 — 0.24% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-46758

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.1 3.1 MEDIUM
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H Click to expand
Attack vector (AV:P)
Hands-on access—USB, keyboard, opening the case—not something you do purely over the wire.
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:N)
Doesn’t really leak secrets in a meaningful 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.
 0.9 5.2 [email protected]

Weakness enumeration for CVE-2021-46758

Affected software / configurations for CVE-2021-46758

Vendor Product Version Raw CPE
amd ryzen_7_5700g_firmware < comboam4v2_pi_1.2.0.8 cpe:2.3:o:amd:ryzen_7_5700g_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_5700ge_firmware < comboam4v2_pi_1.2.0.8 cpe:2.3:o:amd:ryzen_7_5700ge_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_5600g_firmware < comboam4v2_pi_1.2.0.8 cpe:2.3:o:amd:ryzen_5_5600g_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_5600ge_firmware < comboam4v2_pi_1.2.0.8 cpe:2.3:o:amd:ryzen_5_5600ge_firmware:*:*:*:*:*:*:*:*
amd ryzen_3_5300g_firmware < comboam4v2_pi_1.2.0.8 cpe:2.3:o:amd:ryzen_3_5300g_firmware:*:*:*:*:*:*:*:*
amd ryzen_3_5300ge_firmware < comboam4v2_pi_1.2.0.8 cpe:2.3:o:amd:ryzen_3_5300ge_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_7950x3d_firmware < comboam5_1.0.0.1 cpe:2.3:o:amd:ryzen_9_7950x3d_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_7900x3d_firmware < comboam5_1.0.0.1 cpe:2.3:o:amd:ryzen_9_7900x3d_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_7800x3d_firmware < comboam5_1.0.0.1 cpe:2.3:o:amd:ryzen_7_7800x3d_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_4900h_firmware < renoirpi-fp6_1.0.0.a cpe:2.3:o:amd:ryzen_9_4900h_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_4900hs_firmware < renoirpi-fp6_1.0.0.a cpe:2.3:o:amd:ryzen_9_4900hs_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_4800h_firmware < renoirpi-fp6_1.0.0.a cpe:2.3:o:amd:ryzen_7_4800h_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_4800hs_firmware < renoirpi-fp6_1.0.0.a cpe:2.3:o:amd:ryzen_7_4800hs_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_4980u_firmware < renoirpi-fp6_1.0.0.a cpe:2.3:o:amd:ryzen_7_4980u_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_4800u_firmware < renoirpi-fp6_1.0.0.a cpe:2.3:o:amd:ryzen_7_4800u_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_4700u_firmware < renoirpi-fp6_1.0.0.a cpe:2.3:o:amd:ryzen_7_4700u_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_4600h_firmware < renoirpi-fp6_1.0.0.a cpe:2.3:o:amd:ryzen_5_4600h_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_4600hs_firmware < renoirpi-fp6_1.0.0.a cpe:2.3:o:amd:ryzen_5_4600hs_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_4680u_firmware < renoirpi-fp6_1.0.0.a cpe:2.3:o:amd:ryzen_5_4680u_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_4600u_firmware < renoirpi-fp6_1.0.0.a cpe:2.3:o:amd:ryzen_5_4600u_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_4500u_firmware < renoirpi-fp6_1.0.0.a cpe:2.3:o:amd:ryzen_5_4500u_firmware:*:*:*:*:*:*:*:*
amd ryzen_3_4300u_firmware < renoirpi-fp6_1.0.0.a cpe:2.3:o:amd:ryzen_3_4300u_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_5700u_firmware < cezannepi-fp6_1.0.0.c cpe:2.3:o:amd:ryzen_7_5700u_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_5500u_firmware < cezannepi-fp6_1.0.0.c cpe:2.3:o:amd:ryzen_5_5500u_firmware:*:*:*:*:*:*:*:*
amd ryzen_3_5300u_firmware < cezannepi-fp6_1.0.0.c cpe:2.3:o:amd:ryzen_3_5300u_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_5980hx_firmware < cezannepi-fp6_1.0.0.c cpe:2.3:o:amd:ryzen_9_5980hx_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_5980hs_firmware < cezannepi-fp6_1.0.0.c cpe:2.3:o:amd:ryzen_9_5980hs_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_5900hx_firmware < cezannepi-fp6_1.0.0.c cpe:2.3:o:amd:ryzen_9_5900hx_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_5900hs_firmware < cezannepi-fp6_1.0.0.c cpe:2.3:o:amd:ryzen_9_5900hs_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_5800h_firmware < cezannepi-fp6_1.0.0.c cpe:2.3:o:amd:ryzen_7_5800h_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_5800hs_firmware < cezannepi-fp6_1.0.0.c cpe:2.3:o:amd:ryzen_7_5800hs_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_5825u_firmware < cezannepi-fp6_1.0.0.c cpe:2.3:o:amd:ryzen_7_5825u_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_5800u_firmware < cezannepi-fp6_1.0.0.c cpe:2.3:o:amd:ryzen_7_5800u_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_5600h_firmware < cezannepi-fp6_1.0.0.c cpe:2.3:o:amd:ryzen_5_5600h_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_5600hs_firmware < cezannepi-fp6_1.0.0.c cpe:2.3:o:amd:ryzen_5_5600hs_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_5625u_firmware < cezannepi-fp6_1.0.0.c cpe:2.3:o:amd:ryzen_5_5625u_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_5600u_firmware < cezannepi-fp6_1.0.0.c cpe:2.3:o:amd:ryzen_5_5600u_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_5560u_firmware < cezannepi-fp6_1.0.0.c cpe:2.3:o:amd:ryzen_5_5560u_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_5500h_firmware < cezannepi-fp6_1.0.0.c cpe:2.3:o:amd:ryzen_5_5500h_firmware:*:*:*:*:*:*:*:*
amd ryzen_3_5425u_firmware < cezannepi-fp6_1.0.0.c cpe:2.3:o:amd:ryzen_3_5425u_firmware:*:*:*:*:*:*:*:*
amd ryzen_3_5400u_firmware < cezannepi-fp6_1.0.0.c cpe:2.3:o:amd:ryzen_3_5400u_firmware:*:*:*:*:*:*:*:*
amd ryzen_3_5125c_firmware < cezannepi-fp6_1.0.0.c cpe:2.3:o:amd:ryzen_3_5125c_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_6980hx_firmware < rembrandtpi-fp7_1.0.0.5 cpe:2.3:o:amd:ryzen_9_6980hx_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_6980hs_firmware < rembrandtpi-fp7_1.0.0.5 cpe:2.3:o:amd:ryzen_9_6980hs_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_6900hx_firmware < rembrandtpi-fp7_1.0.0.5 cpe:2.3:o:amd:ryzen_9_6900hx_firmware:*:*:*:*:*:*:*:*
amd ryzen_9_6900hs_firmware < rembrandtpi-fp7_1.0.0.5 cpe:2.3:o:amd:ryzen_9_6900hs_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_6800h_firmware < rembrandtpi-fp7_1.0.0.5 cpe:2.3:o:amd:ryzen_7_6800h_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_6800hs_firmware < rembrandtpi-fp7_1.0.0.5 cpe:2.3:o:amd:ryzen_7_6800hs_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_6800u_firmware < rembrandtpi-fp7_1.0.0.5 cpe:2.3:o:amd:ryzen_7_6800u_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_6600h_firmware < rembrandtpi-fp7_1.0.0.5 cpe:2.3:o:amd:ryzen_5_6600h_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_6600hs_firmware < rembrandtpi-fp7_1.0.0.5 cpe:2.3:o:amd:ryzen_5_6600hs_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_6600u_firmware < rembrandtpi-fp7_1.0.0.5 cpe:2.3:o:amd:ryzen_5_6600u_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_7735hs_firmware < rembrandtpi-fp7_1.0.0.5 cpe:2.3:o:amd:ryzen_7_7735hs_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_7736u_firmware < rembrandtpi-fp7_1.0.0.5 cpe:2.3:o:amd:ryzen_7_7736u_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_7735u_firmware < rembrandtpi-fp7_1.0.0.5 cpe:2.3:o:amd:ryzen_7_7735u_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_7535hs_firmware < rembrandtpi-fp7_1.0.0.5 cpe:2.3:o:amd:ryzen_5_7535hs_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_7535u_firmware < rembrandtpi-fp7_1.0.0.5 cpe:2.3:o:amd:ryzen_5_7535u_firmware:*:*:*:*:*:*:*:*
amd ryzen_3_7335u_firmware < rembrandtpi-fp7_1.0.0.5 cpe:2.3:o:amd:ryzen_3_7335u_firmware:*:*:*:*:*:*:*:*
amd ryzen_7_pro_7730u_firmware < cezannepi-fp6_1.0.0.c cpe:2.3:o:amd:ryzen_7_pro_7730u_firmware:*:*:*:*:*:*:*:*
amd ryzen_5_pro_7530u_firmware < cezannepi-fp6_1.0.0.c cpe:2.3:o:amd:ryzen_5_pro_7530u_firmware:*:*:*:*:*:*:*:*
amd ryzen_3_pro_7330u_firmware < cezannepi-fp6_1.0.0.c cpe:2.3:o:amd:ryzen_3_pro_7330u_firmware:*:*:*:*:*:*:*:*

References for CVE-2021-46758

cvelogic Threat Intelligence