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Fencer Intel
low 2.6

CVE-2015-5281 json

The grub2 package before 2.02-0.29 in Red Hat Enterprise Linux (RHEL) 7, when used on UEFI systems, allows local users to bypass intended S…

published 2015-11-24 10 y ago modified 2026-06-17 4 mo ago also EUVD-2015-5260

cvss
2.6
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 27%
public exploits
0
none known

Summary

The grub2 package before 2.02-0.29 in Red Hat Enterprise Linux (RHEL) 7, when used on UEFI systems, allows local users to bypass intended Secure Boot restrictions and execute non-verified code via a crafted (1) multiboot or (2) multiboot2 module in the configuration file or physically proximate attackers to bypass intended Secure Boot restrictions and execute non-verified code via the (3) boot menu.

Patch / fix

  • grub2 RHEL 7 1:2.02-0.29.el7
  • grub2-efi RHEL 7 1:2.02-0.29.el7
  • grub2-tools RHEL 7 1:2.02-0.29.el7
  • grub2-efi-modules RHEL 7 1:2.02-0.29.el7

red hat advisories RHSA-2015:2401

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-2015-5281 updated cvss 2.6

grub2: modules built in on EFI builds that allow loading arbitrary code, circumventing secure boot

  • Red Hat Enterprise Linux Client (v. 7) grub2 2.02-0.29.el7, grub2-efi 2.02-0.29.el7, grub2-tools 2.02-0.29.el7, grub2-efi-modules 2.02-0.29.el7 Red Hat Enterprise Linux Client Optional (v. 7) grub2 2.02-0.29.el7, grub2-efi 2.02-0.29.el7, grub2-tools 2.02-0.29.el7, grub2-efi-modules 2.02-0.29.el7 Red Hat Enterprise Linux ComputeNode (v. 7) grub2 2.02-0.29.el7, grub2-efi 2.02-0.29.el7, grub2-tools 2.02-0.29.el7, grub2-efi-modules 2.02-0.29.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) grub2 2.02-0.29.el7, grub2-efi 2.02-0.29.el7, grub2-tools 2.02-0.29.el7, grub2-efi-modules 2.02-0.29.el7 Red Hat Enterprise Linux Server (v. 7) grub2 2.02-0.29.el7, grub2-efi 2.02-0.29.el7, grub2-tools 2.02-0.29.el7, grub2-efi-modules 2.02-0.29.el7 Red Hat Enterprise Linux Server Optional (v. 7) grub2 2.02-0.29.el7, grub2-efi 2.02-0.29.el7, grub2-tools 2.02-0.29.el7, grub2-efi-modules 2.02-0.29.el7
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 7) grub2 2.02-0.29.el7, grub2-efi 2.02-0.29.el7, grub2-tools 2.02-0.29.el7, grub2-efi-modules 2.02-0.29.el7 Red Hat Enterprise Linux Workstation Optional (v. 7) grub2 2.02-0.29.el7, grub2-efi 2.02-0.29.el7, grub2-tools 2.02-0.29.el7, grub2-efi-modules 2.02-0.29.el7
    fixed: vendor fix RHSA-2015:2401

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

Exploit prediction

0.34% chance of exploitation in the next 30 days, higher than 27% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 2.6 AV:L/AC:H/Au:N/C:P/I:P/A:N

Classification

Weakness
  • CWE-264 Permissions, Privileges, and Access Controls

References

Sources

Fencer Intel 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.