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Vulnerability · Published Sep 5, 2025 · Assigned by AMD

CVE-2024-21977

Low 3.2

In plain English

A low-severity security flaw in AMD EPYC™ 7003 Series Processors from AMD. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities).

Severity (CVSS 3.1)3.2Low
Exploit odds (30 days)0.2%top 95.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

VendorProductVersions
AMD AMD EPYC™ 7003 Series Processors see references
AMD AMD EPYC™ 9004 Series Processors see references
AMD AMD EPYC™ 8004 Series Processors see references
AMD AMD Ryzen™ Threadripper™ PRO 5000 WX-Series Processors see references
AMD AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics see references
AMD AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics see references
AMD AMD Ryzen™ 5000 Series Desktop Processors see references
AMD AMD Ryzen™ 7000 Series Desktop Processors see references
AMD AMD Ryzen™ 7040 Series Mobile Processors with Radeon™ Graphics see references
AMD AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics see references
AMD AMD Ryzen™ 7045 Series Mobile Processors with Radeon™ Graphics see references
AMD AMD Ryzen™ Threadripper™ PRO 3000 WX-Series Processors see references
AMD AMD Ryzen™ 7030 Series Mobile Processors with Radeon™ Graphics see references
AMD AMD Ryzen™ 8000 Series Desktop Processors see references
AMD AMD EPYC™ Embedded 7003 Series Processors see references
AMD AMD EPYC™ Embedded 9004 Series Processors see references
AMD AMD Ryzen™ Embedded 8000 Series Processors see references
AMD AMD Ryzen™ Embedded 7000 Series Processors see references
AMD AMD Ryzen™ Embedded 5000 Series Processors see references
AMD AMD Ryzen™ Embedded V3000 Series Processors see references

Weakness: CWE-459 · Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:N

References