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Vulnerability record · CVE-2024-21978 · published 5 August 2024

CVE-2024-21978: Amd epyc 7203 firmware improper input validation vulnerability

AAmd · Epyc 7203 Firmware

Improper input validation in SEV-SNP could allow a malicious hypervisor to read or overwrite guest memory potentially leading to data leakage or data corruption.

7.9 CVSS 3.1 High EPSS 0.49% · top 60.1% CWE-20 · Improper input validation
7.9CVSS 3.1 base score
0.49%EPSS exploitation probability, 30 days
NoNot in CISA KEV
86Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

Improper input validation in SEV-SNP could allow a malicious hypervisor to read or overwrite guest memory potentially leading to data leakage or data corruption.

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

Affected products

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

References

LinkTags
https://https://www.amd.com/en/resources/product-security/bulletin/amd-sb-3011.html Broken Link

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Related vulnerabilities

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

10.0CVE-2023-20591Amd epyc 8024pn firmware vulnerabilityImproper re-initialization of IOMMU during the DRTM event may permit an untrusted platform configuration to persist, allowing an attacker to read or …EPSS 0.30%9.8CVE-2023-20520Amd epyc 72f3 firmware out-of-bounds write vulnerabilityImproper access control settings in ASP Bootloader may allow an attacker to corrupt the return address causing a stack-based buffer overrun potential…EPSS 0.79%9.8CVE-2021-26379Amd epyc 72f3 firmware vulnerabilityInsufficient input validation of mailbox data in the SMU may allow an attacker to coerce the SMU to corrupt SMRAM, potentially leading to a loss of i…EPSS 0.68%9.1CVE-2021-46756Amd epyc 72f3 firmware improper input validation vulnerabilityInsufficient validation of inputs in SVC_MAP_USER_STACK in the ASP (AMD Secure Processor) bootloader may allow an attacker with a malicious Uapp or A…EPSS 0.65%9.1CVE-2021-46762Amd epyc 72f3 firmware improper input validation vulnerabilityInsufficient input validation in the SMU may allow an attacker to corrupt SMU SRAM potentially leading to a loss of integrity or denial of service.EPSS 0.35%8.8CVE-2021-46769Amd epyc 72f3 firmware improper input validation vulnerabilityInsufficient syscall input validation in the ASP Bootloader may allow a privileged attacker to execute arbitrary DMA copies, which can lead to code e…EPSS 0.78%8.4CVE-2021-26340Amd epyc 7001 firmware vulnerabilityA malicious hypervisor in conjunction with an unprivileged attacker process inside an SEV/SEV-ES guest VM may fail to flush the Translation Lookaside…EPSS 0.24%8.2CVE-2021-26344Amd epyc 7203 firmware out-of-bounds write vulnerabilityAn out of bounds memory write when processing the AMD PSP1 Configuration Block (APCB) could allow an attacker with access the ability to modify the B…EPSS 0.16%

Source: NIST National Vulnerability Database (record CVE-2024-21978), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.