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.
Scores
CVSS v3
3.2
EPSS
0.0001
EPSS Percentile
3.1%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-459
Status
published
Products (20)
AMD/AMD EPYC™ 7003 Series Processors
MilanPI 1.0.0.D
AMD/AMD EPYC™ 8004 Series Processors
GenoaPI 1.0.0.C
AMD/AMD EPYC™ 9004 Series Processors
GenoaPI 1.0.0.C
AMD/AMD EPYC™ Embedded 7003 Series Processors
EmbMilanPI-SP3 1.0.0.9
AMD/AMD EPYC™ Embedded 9004 Series Processors
EmbGenoaPI-SP5 1.0.0.9
AMD/AMD Ryzen™ 5000 Series Desktop Processors
ComboAM4v2 1.2.0.Cb
AMD/AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics
CezannePI-FP6_1.0.1.1
AMD/AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics
RembrandtPI-FP7/FP7r2_1.0.0.B
AMD/AMD Ryzen™ 7000 Series Desktop Processors
ComboAM5 1.2.0.1
AMD/AMD Ryzen™ 7030 Series Mobile Processors with Radeon™ Graphics
CezannePI-FP6_1.0.1.1
... and 10 more
Published
Sep 05, 2025
Tracked Since
Feb 18, 2026