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Vulnerability record · CVE-2021-46773 · published 9 May 2023

CVE-2021-46773: Amd ryzen 6600h firmware improper input validation vulnerability

AAmd · Ryzen 6600h Firmware

Insufficient input validation in ABL may enable a privileged attacker to corrupt ASP memory, potentially resulting in a loss of integrity or code execution.

8.8 CVSS 3.1 High EPSS 0.77% · top 46.1% CWE-20 · Improper input validation
8.8CVSS 3.1 base score
0.77%EPSS exploitation probability, 30 days
NoNot in CISA KEV
63Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Insufficient input validation in ABL may enable a privileged attacker to corrupt ASP memory, potentially resulting in a loss of integrity or code execution.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

63 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001 Vendor Advisory
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.1CVE-2021-46754Amd ryzen 5300g firmware improper input validation vulnerabilityInsufficient input validation in the ASP (AMD Secure Processor) bootloader may allow an attacker with a compromised Uapp or ABL to coerce the bootloa…EPSS 0.57%9.1CVE-2021-46753Amd ryzen 6600h firmware vulnerabilityFailure to validate the length fields of the ASP (AMD Secure Processor) sensor fusion hub headers may allow an attacker with a malicious Uapp or ABL …EPSS 0.56%7.5CVE-2021-46794Amd ryzen 5300g firmware out-of-bounds read vulnerabilityInsufficient bounds checking in ASP (AMD Secure Processor) may allow for an out of bounds read in SMI (System Management Interface) mailbox checksum …EPSS 0.62%7.5CVE-2021-46749Amd ryzen 5300g firmware out-of-bounds read vulnerabilityInsufficient bounds checking in ASP (AMD Secure Processor) may allow for an out of bounds read in SMI (System Management Interface) mailbox checksum …EPSS 0.62%6.1CVE-2021-46759Amd ryzen 5300g firmware out-of-bounds write vulnerabilityImproper syscall input validation in AMD TEE (Trusted Execution Environment) may allow an attacker with physical access and control of a Uapp that ru…EPSS 0.28%5.9CVE-2021-46792Amd ryzen 5300g firmware toctou race condition vulnerabilityTime-of-check Time-of-use (TOCTOU) in the BIOS2PSP command may allow an attacker with a malicious BIOS to create a race condition causing the ASP boo…EPSS 0.40%9.5CVE-2026-88771Citrix netscaler application delivery controller improper input validation vulnerabilityImproper input validation vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-…KEV9.5CVE-2026-93952Arista velocloud orchestrator improper input validation vulnerabilityVeloCloud Orchestrator (VCO) on-prem has a security issue where this issue may allow a remote attacker to access privileged internal functionality an…KEVEPSS 1.1%

Source: NIST National Vulnerability Database (record CVE-2021-46773), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.