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Fencer Vulns
high 8.5

CVE-2025-61972 json

Missing lock bit protection for NBIO registers could allow a local admin-privileged attacker to gain arbitrary System Management Network (S…

published 2026-05-13 5 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-209812

cvss
8.5
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 2%
public exploits
0
none known

Summary

Missing lock bit protection for NBIO registers could allow a local admin-privileged attacker to gain arbitrary System Management Network (SMN) access, potentially resulting in arbitrary code execution in AMD Secure Processor (ASP) and loss of the SEV-SNP guest's confidentiality and integrity.

Patch / fix

  • AMD AMD EPYC™ 9004 Series Processors GenoaPI_1.0.0.H
  • AMD AMD EPYC™ 9005 Series Processors TurinPI_1.0.0.8
  • AMD AMD EPYC™ 8004 Series Processors GenoaPI_1.0.0.H
  • AMD AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Genoa") EmbGenoaPI-SP5 1.0.0.D
  • AMD AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Bergamo") EmbGenoaPI-SP5 1.0.0.D
  • AMD AMD EPYC™ Embedded 8004 Series Processors EmbGenoaPI-SP5 1.0.0.D
  • AMD AMD EPYC™ Embedded 9005 Series Processors EmbeddedTurinPI_SP5_1004

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
5 mo ago

Exploit prediction

0.13% chance of exploitation in the next 30 days, higher than 2% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 8.5 CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
CNA 4.0 8.5 CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/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

Affected products

  • AMD AMD EPYC™ 9004 Series Processors
  • AMD AMD EPYC™ 9005 Series Processors
  • AMD AMD EPYC™ 8004 Series Processors
  • AMD AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Genoa")
  • AMD AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Bergamo")
  • AMD AMD EPYC™ Embedded 8004 Series Processors
  • AMD AMD EPYC™ Embedded 9005 Series Processors

Classification

Weakness
  • CWE-1233 Security-Sensitive Hardware Controls with Missing Lock Bit Protection

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.