Description
Improper signature verification in AMD CPU ROM microcode patch loader may allow an attacker with local administrator privilege to load malicious microcode, potentially resulting in loss of integrity of x86 instruction execution, loss of confidentiality and integrity of data in x86 CPU privileged context and compromise of SMM execution environment.
Scores
CVSS v3
6.4
EPSS
0.0003
EPSS Percentile
7.5%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-347
Status
published
Products (50)
AMD/AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics
ComboAM4PI 1.0.0.D
AMD/AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics
ComboAM4v2PI 1.2.0.E
AMD/AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics
PicassoPI-FP5 1.0.1.2b
AMD/AMD EPYC™ 4004 Series
ComboAM5PI1.0.0.a
AMD/AMD EPYC™ 4004 Series
ComboAM5PI1.1.0.3c
AMD/AMD EPYC™ 4004 Series
ComboAM5PI1.2.0.3
AMD/AMD EPYC™ 7001 Series
NaplesPI 1.0.0.P
AMD/AMD EPYC™ 7002 Series
RomePI 1.0.0.L
AMD/AMD EPYC™ 7003 Series
MilanPI 1.0.0.F
AMD/AMD EPYC™ 9004 Series
Genoa 1.0.0.E
... and 40 more
Published
Jun 27, 2025
Tracked Since
Feb 18, 2026