CVE-2024-21977
Low
Description
Incomplete cleanup after loading a CPU microcode patch may allow a privileged attacker to degrade the entropy of the RDRAND instruction, potentially resulting in loss of integrity for SEV-SNP guests.
SeverityLow
CVSS3.2
Exploit probability—
ProductAMD EPYC™ 7003 Series Processors
PublishedSep 5, 2025
First seenSep 5, 2025
Weakness typeCWE-459CWE-459
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| AMD AMD EPYC™ 7003 Series Processors | No range specified | — |
| AMD AMD EPYC™ 9004 Series Processors | No range specified | — |
| AMD AMD EPYC™ 8004 Series Processors | No range specified | — |
| AMD AMD Ryzen™ Threadripper™ PRO 5000 WX-Series Processors | No range specified | — |
| AMD AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics | No range specified | — |
| AMD AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics | No range specified | — |
| AMD AMD Ryzen™ 5000 Series Desktop Processors | No range specified | — |
| AMD AMD Ryzen™ 7000 Series Desktop Processors | No range specified | — |
| AMD AMD Ryzen™ 7040 Series Mobile Processors with Radeon™ Graphics | No range specified | — |
| AMD AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics | No range specified | — |
| AMD AMD Ryzen™ 7045 Series Mobile Processors with Radeon™ Graphics | No range specified | — |
| AMD AMD Ryzen™ Threadripper™ PRO 3000 WX-Series Processors | No range specified | — |
| AMD AMD Ryzen™ 7030 Series Mobile Processors with Radeon™ Graphics | No range specified | — |
| AMD AMD Ryzen™ 8000 Series Desktop Processors | No range specified | — |
| AMD AMD EPYC™ Embedded 7003 Series Processors | No range specified | — |
| AMD AMD EPYC™ Embedded 9004 Series Processors | No range specified | — |
| AMD AMD Ryzen™ Embedded 8000 Series Processors | No range specified | — |
| AMD AMD Ryzen™ Embedded 7000 Series Processors | No range specified | — |
| AMD AMD Ryzen™ Embedded 5000 Series Processors | No range specified | — |
| AMD AMD Ryzen™ Embedded V3000 Series Processors | No range specified | — |
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