Skip to content
Noroxi
NVD / CVE Program· CNA redhat

CVE-2015-5281: 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…

LowCVSS 2.6 · v2.0—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 10/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.33% (FIRST EPSS).
  • Special conditions such as timing or configuration are required.
  • Fixed version: grub2 (Red Hat:enterprise_linux:7::client) 1:2.02-0.29.el7; grub2-debuginfo (Red Hat:enterprise_linux:7::client) 1:2.02-0.29.el7; grub2-efi (Red Hat:enterprise_linux:7::client) 1:2.02-0.29.el7.

Low priority for now. Upgrade to grub2 (Red Hat:enterprise_linux:7::client) 1:2.02-0.29.el7; grub2-debuginfo (Red Hat:enterprise_linux:7::client) 1:2.02-0.29.el7; grub2-efi (Red Hat:enterprise_linux:7::client) 1:2.02-0.29.el7 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

Published
Nov 24, 2015
Updated
Jun 16, 2026
EPSS
0.3% · 27th percentile

Report tools

JSON

Action score

10

Monitor

Low priority for now.

CVSS
10 / 40 · 2.6 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2015-5281

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits every 10 minutes on paid plans, on the hour on the free plan.

Your free account also gets you

  • CVE alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools, at most 30 a day (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for redhat records
Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
redhatenterprise linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • redhat enterprise linux7.0

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Red Hat:enterprise_linux:7::clientgrub2before 1:2.02-0.29.el71:2.02-0.29.el7
Red Hat:enterprise_linux:7::clientgrub2-debuginfobefore 1:2.02-0.29.el71:2.02-0.29.el7
Red Hat:enterprise_linux:7::clientgrub2-efibefore 1:2.02-0.29.el71:2.02-0.29.el7
Red Hat:enterprise_linux:7::clientgrub2-efi-modulesbefore 1:2.02-0.29.el71:2.02-0.29.el7
Red Hat:enterprise_linux:7::clientgrub2-toolsbefore 1:2.02-0.29.el71:2.02-0.29.el7

Same product

redhat: all records

Other highest-scoring records for the same primary product.

  • CVE-2015-3246libuser before 0.56.13-8 and 0.60 before 0.60-7, as used in the userhelper program in the usermode package, directly modifies /etc/passwd…KEV
    62This week
  • CVE-2023-50387Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of…
    60This week
  • CVE-2017-5456A mechanism to bypass file system access protections in the sandbox using the file system request constructor through an IPC message.
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2014-0186Jun 14, 2014 · A certain tomcat7 package for Apache Tomcat 7 in Red Hat Enterprise Linux (RHEL) 7 allows remote attackers to cause a denial of service…
    21Monitor
  • ← EarlierCVE-2014-8138Dec 24, 2014 · Heap-based buffer overflow in the jp2_decode function in JasPer 1.900.1 and earlier allows remote attackers to cause a denial of service…
    36Monitor
  • Later →CVE-2015-5229Apr 8, 2016 · The calloc function in the glibc package in Red Hat Enterprise Linux (RHEL) 6.7 and 7.2 does not properly initialize memory areas, which…
    31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
red hat:grub21:2.02-0.29.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:grub2-debuginfo1:2.02-0.29.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:grub2-efi1:2.02-0.29.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:grub2-efi-modules1:2.02-0.29.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:grub2-tools1:2.02-0.29.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
P · data can be read
Integrity
P · data or configuration can be modified
Availability
none
Attack complexity
High
Confidentiality impact
P
Integrity impact
P
Availability impact
None

Weakness class (CWE)

CWE-264 · Permissions, Privileges, and Access Controls

CVSS vector

AV:L/AC:H/Au:N/C:P/I:P/A:N

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

References

Show all references (6 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records