CVE-2025-61971CWE-1233

Missing lock bit protection for NBIO registers could allow a local admin-privileged attacker to modify MMIO routing configurations, potentially resulting in…

Medium · published May 13, 2026

CVSS v4.0
5.9
EPSS
0%
Percentile
1.8
In the wild
Unconfirmed
What it is

Missing lock bit protection for NBIO registers could allow a local admin-privileged attacker to modify MMIO routing configurations, potentially resulting in loss of SEV-SNP guest integrity.

The record
Technical detail
CVSS v4.0
5.9 · MEDIUM
Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N
EPSS
0.00116 · 1.8th percentile
Weakness
CWE-1233 · Security-Sensitive Hardware Controls with Missing Lock Bit Protection
Published
2026-05-13T03:02Z
EPSS history
Timeline
  • 13 MAY 03:02Z
    Missing lock bit protection for NBIO registers could allow a local admin-privileged attacker to modify MMIO routing configurations, potentially resulting in…
    cvelistv5