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VulnerabilityCVE-2015-5281Published 2015-11-24

CVE-2015-5281

Public exploit1 PoC repo

As of 2024-08-06, CVE-2015-5281 is a vulnerability, EPSS 0.3% (25.1th percentile). Threadlinqs Intelligence links 2 tracked threat campaigns to CVE-2015-5281, most recently “Forgotten UEFI Shims Undermine Secure Boot (CVE-2026-8863, CVE-2026-10797)”.

CVSS
—Not yet scored
EPSS
0.3%Higher than 25.1% of scored CVEs
CISA KEV
NoNot in the KEV catalog
Tracked threats
2Campaigns referencing it
Priority
3/10Threadlinqs triage score
Published
Updated 2024-08-06
EPSS 0.3% (higher than 25.1% of all scored CVEs) · Priority 3/10 · Published 2015-11-24

Last updated:

What is 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 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.

The identifier was first published 3991 days ago.

Severity and exploitation probability

EPSS (FIRST)
0.3% probability of exploitation in the next 30 days, higher than 25.1% of all scored CVEs
CISA KEV
Not listed in the CISA Known Exploited Vulnerabilities catalog
Threadlinqs priority
3/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
Published
2015-11-24, last modified 2024-08-06

Is CVE-2015-5281 being exploited?

Weaponised exploit code for CVE-2015-5281 is publicly available. 1 public proof-of-concept repository is tracked for this identifier. It currently carries a trending score of 24 in the Threadlinqs vulnerability feed.

Affected products and versions

No affected-product or package list has been recorded for CVE-2015-5281 in the tracked sources. The vendor advisory and the references below are the authoritative statement of what is affected.

How to fix CVE-2015-5281

No vendor patch reference has been recorded for CVE-2015-5281 in the tracked sources. Follow the references below for a fix, and treat any affected deployment as exposed until the vendor states otherwise.

Threat activity tracking CVE-2015-5281

2 tracked threats in the Threadlinqs corpus reference CVE-2015-5281, either in the campaign’s CVE list or as an indicator on the campaign record.

Sources

Enriched from CVE.org, FIRST EPSS, public proof-of-concept repositories. Last verified by Threadlinqs on .

Vendor advisory and patch

Vulnerability database entry