Cyber Resilience

CVE-2021-46794

High

Published: 09 May 2023

Published
09 May 2023
Modified
28 January 2025
KEV Added
—
Patch
—
CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0054 67.9th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-46794 is a high-severity Out-of-bounds Read (CWE-125) vulnerability in Amd Ryzen 3100 Firmware. Its CVSS base score is 7.5 (High).

Operationally, ranked in the top 32.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Insufficient bounds checking in ASP (AMD Secure Processor) may allow for an out of bounds read in SMI (System Management Interface) mailbox checksum calculation triggering a data abort, resulting in a potential denial of service.

CWE(s)
CWE-125

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

amd
ryzen 5300g firmware
cezannepi-fp6_1.0.0.6
amd
ryzen 5300ge firmware
cezannepi-fp6_1.0.0.6
amd
ryzen 5500 firmware
cezannepi-fp6_1.0.0.6
amd
ryzen 5600 firmware
cezannepi-fp6_1.0.0.6
amd
ryzen 5600g firmware
cezannepi-fp6_1.0.0.6
amd
ryzen 5600ge firmware
cezannepi-fp6_1.0.0.6
amd
ryzen 5600x firmware
cezannepi-fp6_1.0.0.6
amd
ryzen 5700g firmware
cezannepi-fp6_1.0.0.6
amd
ryzen 5700ge firmware
cezannepi-fp6_1.0.0.6
amd
ryzen 5700x firmware
cezannepi-fp6_1.0.0.6
+46 more product configuration(s) — see NVD for full list

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References