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Fencer Vulns
high 7.5

CVE-2025-54502 json

Incorrect use of boot service in the AMD Platform Configuration Blob (APCB) SMM driver could allow a privileged attacker with local access…

published 2026-04-16 6 mo ago modified 2026-07-15 3 mo ago also EUVD-2025-209508

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 3%
public exploits
0
none known

Summary

Incorrect use of boot service in the AMD Platform Configuration Blob (APCB) SMM driver could allow a privileged attacker with local access (Ring 0) to achieve privilege escalation potentially resulting in arbitrary code execution.

Patch / fix

  • AMD AMD EPYC™ 9004 Series Processors GenoaPI_1.0.0.H
  • AMD AMD EPYC™ 7003 Series Processors MilanPI-SP3_1.0.0.J
  • AMD AMD EPYC™ 7002 Series Processors Rome-1.0.0.P
  • AMD AMD EPYC™ 4004 Series Processors ComboAM5PI 1.0.0.d
  • AMD AMD EPYC™ 9005 Series Processors TurinPI-SP5_1.0.0.9
  • AMD AMD Instinct™ MI300A Series Processors MI300A 1.0.0.C
  • AMD AMD EPYC™ 9V64H Processor MI300C 1.0.0.3
  • AMD AMD EPYC™ 8004 Series Processors GenoaPI_1.0.0.H
  • AMD AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics RenoirPI-FP6 1.0.0.Ed
  • AMD AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics RembrandtPI-FP7_1.0.0.Bg
  • AMD AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics PicassoPI-FP5_1.0.1.2e
  • AMD AMD Ryzen™ 7040 Series Mobile Processors with Radeon™ Graphics PhoenixPI-FP8-FP7_1.2.0.0f
  • AMD AMD Ryzen™ 7020 Series Processors with Radeon™ Graphics MendocinoPI-FT6_1.0.0.7g
  • AMD AMD Ryzen™ 7045 Series Mobile Processors with Radeon™ Graphics DragonRangeFL1PI 1.0.0.3k
  • AMD AMD Ryzen™ 7000 Series Desktop Processors ComboAM5PI 1.0.0.d, ComboAM5PI 1.1.0.3f, ComboAM5PI 1.2.0.3h
  • AMD AMD Ryzen™ 3000 Series Desktop Processors ComboAM4PI 1.0.0.10, ComboAM4v2PI 1.2.0.10
  • AMD AMD Ryzen™ Threadripper™ PRO 3000 WX-Series Processors CastlePeakWSPI-sWRX8 1.0.0.I, ChagallWSPI-sWRX8 1.0.0.D
  • AMD AMD Ryzen™ 7030 Series Mobile Processors with Radeon™ Graphics CezannePI-FP6_1.0.1.1d
  • AMD AMD Ryzen™ 9000HX Series Processors FireRangeFL1PI 1.0.0.0d
  • AMD AMD Ryzen™ AI 300 Series Processors StrixKrackanPI-FP8_1.1.0.0e, StrixKrackanPI-FP8_1.1.0.2d
  • AMD AMD Ryzen™ Threadripper™ PRO 5000 WX-Series Processors ChagallWSPI-sWRX8 1.0.0.D
  • AMD AMD Ryzen™ Threadripper™ PRO 7000 WX-Series Processors ShimadaPeakPI-SP6 1.0.0.1c, StormPeakPI-SP6 1.0.0.1m, StormPeakPI-SP6_1.1.0.0k
  • AMD AMD Ryzen™ 8000 Series Desktop Processors ComboAM5PI 1.1.0.3f, ComboAM5PI 1.2.0.3h
  • AMD AMD Ryzen™ 9000 Series Desktop Processors ComboAM5PI 1.2.0.3h
  • AMD AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics CezannePI-FP6_1.0.1.1d
  • AMD AMD Ryzen™ 4000 Series Desktop Processors ComboAM4v2PI 1.2.0.10
  • AMD AMD Ryzen™ 5000 Series Desktop Processors ComboAM4v2PI 1.2.0.10
  • AMD AMD Ryzen™ 5000 Series Desktop Processors with Radeon™ Graphics ComboAM4v2PI 1.2.0.10
  • AMD AMD Ryzen™ 8040 Series Mobile Processors with Radeon™ Graphics PhoenixPI-FP8-FP7_1.2.0.0f
  • AMD AMD Ryzen™ 3000 Series Mobile Processors with Radeon™ Graphics PicassoPI-FP5_1.0.1.2e

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-54502 updated cvss 7.5

AMD Platform Configuration Blob: APCB SMM driver: kernel: linux-firmware: AMD APCB SMM driver: Arbitrary Code Execution via incorrect boot service use

  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more
    not affected: vulnerable code not present
  • Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +83 more
    not affected: component not present
  • Red Hat Enterprise Linux 10 kernel, libkrun
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
6 mo ago

Exploit prediction

0.14% chance of exploitation in the next 30 days, higher than 3% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 7.1 CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADP 3.1 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
CNA 4.0 7.1 CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CNA 3.1 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Affected products

  • AMD AMD EPYC™ 9004 Series Processors
  • AMD AMD EPYC™ 7003 Series Processors
  • AMD AMD EPYC™ 7002 Series Processors
  • AMD AMD EPYC™ 4004 Series Processors
  • AMD AMD EPYC™ 9005 Series Processors
  • AMD AMD Instinct™ MI300A Series Processors
  • AMD AMD EPYC™ 9V64H Processor
  • AMD AMD EPYC™ 8004 Series Processors
  • AMD AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics
  • AMD AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics
  • AMD AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics
  • AMD AMD Ryzen™ 7040 Series Mobile Processors with Radeon™ Graphics
  • AMD AMD Ryzen™ 7020 Series Processors with Radeon™ Graphics
  • AMD AMD Ryzen™ 7045 Series Mobile Processors with Radeon™ Graphics
  • AMD AMD Ryzen™ 7000 Series Desktop Processors
  • AMD AMD Ryzen™ 3000 Series Desktop Processors
  • AMD AMD Ryzen™ Threadripper™ PRO 3000 WX-Series Processors
  • AMD AMD Ryzen™ 7030 Series Mobile Processors with Radeon™ Graphics
  • AMD AMD Ryzen™ 9000HX Series Processors
  • AMD AMD Ryzen™ AI 300 Series Processors
  • AMD AMD Ryzen™ Threadripper™ PRO 5000 WX-Series Processors
  • AMD AMD Ryzen™ Threadripper™ PRO 7000 WX-Series Processors
  • AMD AMD Ryzen™ 8000 Series Desktop Processors
  • AMD AMD Ryzen™ 9000 Series Desktop Processors
  • AMD AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics
  • AMD AMD Ryzen™ 4000 Series Desktop Processors
  • AMD AMD Ryzen™ 5000 Series Desktop Processors
  • AMD AMD Ryzen™ 5000 Series Desktop Processors with Radeon™ Graphics
  • AMD AMD Ryzen™ 8040 Series Mobile Processors with Radeon™ Graphics
  • AMD AMD Ryzen™ 3000 Series Mobile Processors with Radeon™ Graphics
  • AMD AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics
  • AMD AMD Ryzen™ AI Max 300 Series Processors
  • AMD AMD Ryzen™ Z1 Series Processors
  • AMD AMD Ryzen™ Z2 Series Processors Extreme
  • AMD AMD Ryzen™ Z2 Series Processors
  • AMD AMD Ryzen™ Z2 Series Processors Go
  • AMD AMD Ryzen™ Threadripper™ 7000 Processors
  • AMD AMD Ryzen™ Threadripper™ 9000 Processors
  • AMD AMD Ryzen™ Threadripper™ PRO 9000 WX-Series Processors
  • AMD AMD Ryzen™ 7000 Series Desktop Processors (formerly codenamed "Raphael")
  • AMD AMD Ryzen™ 8000 Series Desktop Processors (formerly codenamed "Phoenix")
  • AMD AMD Ryzen™ 9000 Series Desktop Processors (formerly codenamed "Granite Ridge")
  • AMD AMD EPYC™ Embedded 7003 Series Processors
  • AMD AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Genoa")
  • AMD AMD EPYC™ Embedded 7002 Series Processors
  • AMD AMD Ryzen™ Embedded R1000 Series Processors
  • AMD AMD Ryzen™ Embedded R2000 Series Processors
  • AMD AMD Ryzen™ Embedded V1000 Series Processors (formerly codenamed "Raven Ridge")
  • AMD AMD Ryzen™ Embedded 5000 Series Processors
  • AMD AMD Ryzen™ Embedded V2000 Series Processors

Classification

Weakness
  • CWE-668 Exposure of Resource to Wrong Sphere
  • CWE-648 Incorrect Use of Privileged APIs

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.