grub2: modules built in on EFI builds that allow loading arbitrary code, circumventing secure boot
Published Nov 24, 2015
2.6
LOWCVSS 2.0
EPSS 0.34%
Description
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.
Affected products
No data.
- 7.0
No data.
Red Hat Enterprise Linux 7
grub2-1:2.02-0.29.el7
Fixed · RHSA-2015:2401
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | grub2-1:2.02-0.29.el7 | Fixed | RHSA-2015:2401 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:L/AC:H/Au:N/C:P/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.34% (0.00337) | 24.75th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.34% (0.00335) | 25.05th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.04% (0.00041) | 9.74th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.03% (0.01034) | 41.69th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.03% (0.01034) | 41.16th | v2 (v2022.01.01) |
| Feb 3, 2023 | 1.28% (0.01282) | 67.60th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.03% (0.01034) | 39.91th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.03% (0.01034) | 37.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.03% (0.01034) | 20.32th | v2 (v2022.01.01) |
References (10)
- http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172611.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172942.html vendor-advisoryx_refsource_FEDORA
- http://rhn.redhat.com/errata/RHSA-2015-2401.html vendor-advisoryx_refsource_REDHATVendor Advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/77983 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1034198 vdb-entryx_refsource_SECTRACK
- https://access.redhat.com/security/cve/CVE-2015-5281 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1264103 x_refsource_CONFIRMIssue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2015-5281
- https://www.cve.org/CVERecord?id=CVE-2015-5281
| Link | Providers | Tags |
|---|---|---|
| http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172611.html | vendor-advisoryx_refsource_FEDORA | |
| http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172942.html | vendor-advisoryx_refsource_FEDORA | |
| http://rhn.redhat.com/errata/RHSA-2015-2401.html | vendor-advisoryx_refsource_REDHATVendor Advisory | |
| http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html | x_refsource_CONFIRM | |
| http://www.securityfocus.com/bid/77983 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id/1034198 | vdb-entryx_refsource_SECTRACK | |
| https://access.redhat.com/security/cve/CVE-2015-5281 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1264103 | x_refsource_CONFIRMIssue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2015-5281 | ||
| https://www.cve.org/CVERecord?id=CVE-2015-5281 |
Change history (0)
No recorded changes yet.