CVE-2025-20109

EUVD-2025-24431
Improper Isolation or Compartmentalization in the stream cache mechanism for some Intel(R) Processors may allow an authenticated user to potentially enable escalation of privilege via local access.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.8 HIGH
LOCAL
HIGH
LOW
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
intelCNA
7.8 HIGH
LOCAL
HIGH
LOW
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 2%
Debian logo
Debian Releases
Debian Product
Codename
intel-microcode
bookworm/non-free-firmware
3.20251111.1~deb12u1
fixed
bookworm/non-free-firmware (security)
3.20250812.1~deb12u1
fixed
bullseye/non-free
vulnerable
bullseye/non-free (security)
3.20250812.1~deb11u1
fixed
forky/non-free-firmware
3.20260210.1
fixed
sid/non-free-firmware
3.20260210.1
fixed
trixie/non-free-firmware
3.20251111.1~deb13u1
fixed
trixie/non-free-firmware (security)
3.20250812.1~deb13u1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
intel-microcode
bionic
Fixed 3.20250812.0ubuntu0.18.04.1+esm1
released
focal
Fixed 3.20250812.0ubuntu0.20.04.1+esm1
released
jammy
Fixed 3.20250812.0ubuntu0.22.04.1
released
noble
Fixed 3.20250812.0ubuntu0.24.04.1
released
plucky
Fixed 3.20250812.0ubuntu0.25.04.1
released
questing
Fixed 3.20250812.0ubuntu0.25.10.1
released
trusty
ignored
xenial
Fixed 3.20250812.0ubuntu0.16.04.1+esm1
released
Common Weakness Enumeration
References
https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01249.html
https://lists.debian.org/debian-lts-announce/2025/10/msg00027.html