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Fencer Vulns
medium 6.5

CVE-2024-39279 json

Insufficient granularity of access control in UEFI firmware in some Intel(R) processors may allow a authenticated user to potentially enabl…

published 2025-02-12 20 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-4933

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 12%
public exploits
0
none known

Summary

Insufficient granularity of access control in UEFI firmware in some Intel(R) processors may allow a authenticated user to potentially enable denial of service via local access.

Patch / fix

  • intel-microcode Debian 12 3.20250211.1~deb12u1
  • intel-microcode Debian 14, Debian 13 3.20250211.1

debian advisories DEBIAN-CVE-2024-39279

  • intel-microcode Ubuntu 20.04 LTS 3.20250211.0ubuntu0.20.04.1
  • intel-microcode Ubuntu 22.04 LTS 3.20250211.0ubuntu0.22.04.1
  • intel-microcode Ubuntu 24.04 LTS 3.20250211.0ubuntu0.24.04.1
  • intel-microcode Ubuntu Pro 16.04 LTS 3.20250211.0ubuntu0.16.04.1+esm1
  • intel-microcode Ubuntu Pro 18.04 LTS 3.20250211.0ubuntu0.18.04.1+esm1

ubuntu advisories UBUNTU-CVE-2024-39279

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • microcode_ctl RHEL 8 4:20250211-1.el8_10
  • microcode_ctl RHEL 9 4:20250211-1.el9_6

red hat advisories RHEA-2025:3114RHSA-2025:7043

  • microcode_ctl AlmaLinux 9 4:20250211-1.el9_6

almalinux advisories ALSA-2025:7043

  • microcode_ctl Rocky Linux 9 4:20250211-1.el9_6

rocky linux advisories RLSA-2025:7043

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-2024-39279 updated cvss 6.5

microcode_ctl: Insufficient granularity of access control in UEFI firmware

  • Red Hat Enterprise Linux 7 microcode_ctl
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux BaseOS (v. 8) microcode_ctl 20250211-1.el8_10
    fixed: vendor fix RHEA-2025:3114
  • Red Hat Enterprise Linux BaseOS (v. 9) microcode_ctl 20250211-1.el9_6
    fixed: vendor fix RHSA-2025:7043
  • Red Hat Enterprise Linux 10 microcode_ctl
    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
partial
Assessed
20 mo ago

Exploit prediction

0.22% chance of exploitation in the next 30 days, higher than 12% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 6.8 CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
CNA 3.1 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CNA 4.0 6.8 CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/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

  • n/a Intel(R) processors

Classification

Weakness
  • CWE-1220 Insufficient Granularity of Access Control

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.