CVE-2026-20760

EUVD-2026-56489
Improper handling of overlap between protected memory ranges in some microcode for some Intel(R) Processors within Ring 0: Hypervisor may allow an escalation of privilege. Authorized adversary with a privileged user combined with a low complexity attack may enable escalation of privilege. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (high), integrity (high) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
UNKNOWN
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Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 0.89%
Debian logo
Debian Releases
Debian Product
Codename
intel-microcode
bookworm
postponed
bookworm/non-free-firmware
vulnerable
bookworm/non-free-firmware (security)
vulnerable
forky/non-free-firmware
vulnerable
sid/non-free-firmware
vulnerable
trixie
postponed
trixie/non-free-firmware
vulnerable
trixie/non-free-firmware (security)
vulnerable
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
intel-microcode
bionic
needs-triage
focal
needs-triage
jammy
needs-triage
noble
needs-triage
resolute
needs-triage
trusty
needs-triage
xenial
needs-triage