CVE-2019-14865· NVD / CVE Program· CNA redhat

A flaw was found in the grub2-set-bootflag utility of grub2.

A flaw was found in the grub2-set-bootflag utility of grub2. A local attacker could run this utility under resource pressure (for example by setting RLIMIT), causing grub2 configuration files to be truncated and leaving the system unbootable on subsequent reboots.

MediumCVSS 5.9 · v3.1—No exploit Fix available

Published: Nov 29, 2019
Updated: Jun 16, 2026
EPSS: 0.3% · 23th percentile
CWE: CWE-267

Follow this CVE

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 23 / 40 · 5.9 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.3%

CNA vs NVD score

NVD: 5.9
CNA · redhat: 5.9; agree

CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:H

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

Vendor	Product	CPE
gnu	grub2	cpe:2.3:a:gnu:grub2
redhat	enterprise linux	cpe:2.3:o:redhat:enterprise_linux
redhat	enterprise linux eus	cpe:2.3:o:redhat:enterprise_linux_eus
redhat	enterprise linux server aus	cpe:2.3:o:redhat:enterprise_linux_server_aus
redhat	enterprise linux server tus	cpe:2.3:o:redhat:enterprise_linux_server_tus

Affected versions

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

gnu grub2all versions

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

[UNKNOWN] grub2
- n/aaffected

Package-level exposure

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

Ecosystem	Package	Affected range	Fix
Red Hat:enterprise_linux:8::baseos	grub2	before 1:2.02-78.el8_1.1	1:2.02-78.el8_1.1
Red Hat:enterprise_linux:8::baseos	grub2-common	before 1:2.02-78.el8_1.1	1:2.02-78.el8_1.1
Red Hat:enterprise_linux:8::baseos	grub2-debuginfo	before 1:2.02-78.el8_1.1	1:2.02-78.el8_1.1
Red Hat:enterprise_linux:8::baseos	grub2-debugsource	before 1:2.02-78.el8_1.1	1:2.02-78.el8_1.1
Red Hat:enterprise_linux:8::baseos	grub2-efi-aa64	before 1:2.02-78.el8_1.1	1:2.02-78.el8_1.1
Red Hat:enterprise_linux:8::baseos	grub2-efi-aa64-cdboot	before 1:2.02-78.el8_1.1	1:2.02-78.el8_1.1
Red Hat:enterprise_linux:8::baseos	grub2-efi-aa64-modules	before 1:2.02-78.el8_1.1	1:2.02-78.el8_1.1
Red Hat:enterprise_linux:8::baseos	grub2-efi-ia32	before 1:2.02-78.el8_1.1	1:2.02-78.el8_1.1
Red Hat:enterprise_linux:8::baseos	grub2-efi-ia32-cdboot	before 1:2.02-78.el8_1.1	1:2.02-78.el8_1.1
Red Hat:enterprise_linux:8::baseos	grub2-efi-ia32-modules	before 1:2.02-78.el8_1.1	1:2.02-78.el8_1.1
Red Hat:enterprise_linux:8::baseos	grub2-efi-x64	before 1:2.02-78.el8_1.1	1:2.02-78.el8_1.1
Red Hat:enterprise_linux:8::baseos	grub2-efi-x64-cdboot	before 1:2.02-78.el8_1.1	1:2.02-78.el8_1.1
Red Hat:enterprise_linux:8::baseos	grub2-efi-x64-modules	before 1:2.02-78.el8_1.1	1:2.02-78.el8_1.1
Red Hat:enterprise_linux:8::baseos	grub2-pc	before 1:2.02-78.el8_1.1	1:2.02-78.el8_1.1
Red Hat:enterprise_linux:8::baseos	grub2-pc-modules	before 1:2.02-78.el8_1.1	1:2.02-78.el8_1.1
Red Hat:enterprise_linux:8::baseos	grub2-ppc64le	before 1:2.02-78.el8_1.1	1:2.02-78.el8_1.1
Red Hat:enterprise_linux:8::baseos	grub2-ppc64le-modules	before 1:2.02-78.el8_1.1	1:2.02-78.el8_1.1
Red Hat:enterprise_linux:8::baseos	grub2-tools	before 1:2.02-78.el8_1.1	1:2.02-78.el8_1.1
Red Hat:enterprise_linux:8::baseos	grub2-tools-debuginfo	before 1:2.02-78.el8_1.1	1:2.02-78.el8_1.1
Red Hat:enterprise_linux:8::baseos	grub2-tools-efi	before 1:2.02-78.el8_1.1	1:2.02-78.el8_1.1
Red Hat:enterprise_linux:8::baseos	grub2-tools-efi-debuginfo	before 1:2.02-78.el8_1.1	1:2.02-78.el8_1.1
Red Hat:enterprise_linux:8::baseos	grub2-tools-extra	before 1:2.02-78.el8_1.1	1:2.02-78.el8_1.1
Red Hat:enterprise_linux:8::baseos	grub2-tools-extra-debuginfo	before 1:2.02-78.el8_1.1	1:2.02-78.el8_1.1
Red Hat:enterprise_linux:8::baseos	grub2-tools-minimal	before 1:2.02-78.el8_1.1	1:2.02-78.el8_1.1

Same product

gnu: all records

Other highest-scoring records for the same primary product.

CVE-2024-56737GNU GRUB (aka GRUB2) through 2.12 has a heap-based buffer overflow in fs/hfs.c via crafted sblock data in an HFS filesystem.
35Monitor
CVE-2022-2601A buffer overflow was found in grub_font_construct_glyph().
34Monitor
CVE-2020-10713A flaw was found in grub2, prior to version 2.06.
33Monitor
CVE-2022-28733Integer underflow in grub_net_recv_ip4_packets
32Monitor
CVE-2021-20233A flaw was found in grub2 in versions prior to 2.06.
32Monitor
CVE-2020-25632A flaw was found in grub2 in versions prior to 2.06.
32Monitor

Remediation

Which version to upgrade to

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

Product / package	Fixed version	Source
red hat:grub2	1:2.02-78.el8_1.1 · Red Hat:enterprise_linux:8::baseos	Package registry (OSV)
red hat:grub2-common	1:2.02-78.el8_1.1 · Red Hat:enterprise_linux:8::baseos	Package registry (OSV)
red hat:grub2-debuginfo	1:2.02-78.el8_1.1 · Red Hat:enterprise_linux:8::baseos	Package registry (OSV)
red hat:grub2-debugsource	1:2.02-78.el8_1.1 · Red Hat:enterprise_linux:8::baseos	Package registry (OSV)
red hat:grub2-efi-aa64	1:2.02-78.el8_1.1 · Red Hat:enterprise_linux:8::baseos	Package registry (OSV)
red hat:grub2-efi-aa64-cdboot	1:2.02-78.el8_1.1 · Red Hat:enterprise_linux:8::baseos	Package registry (OSV)
red hat:grub2-efi-aa64-modules	1:2.02-78.el8_1.1 · Red Hat:enterprise_linux:8::baseos	Package registry (OSV)
red hat:grub2-efi-ia32	1:2.02-78.el8_1.1 · Red Hat:enterprise_linux:8::baseos	Package registry (OSV)
red hat:grub2-efi-ia32-cdboot	1:2.02-78.el8_1.1 · Red Hat:enterprise_linux:8::baseos	Package registry (OSV)
red hat:grub2-efi-ia32-modules	1:2.02-78.el8_1.1 · Red Hat:enterprise_linux:8::baseos	Package registry (OSV)
red hat:grub2-efi-x64	1:2.02-78.el8_1.1 · Red Hat:enterprise_linux:8::baseos	Package registry (OSV)
red hat:grub2-efi-x64-cdboot	1:2.02-78.el8_1.1 · Red Hat:enterprise_linux:8::baseos	Package 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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Someone with local access to the system can trigger it.
A low-privileged account is enough.
A user must open a link or visit a page.
No special conditions are required; it is repeatable.

If successful

Confidentiality: none
Integrity: none
Availability: high · the service can be disrupted

Impact can extend beyond the vulnerable component (scope changes).

Attack vector: Local
Attack complexity: Low
Privileges required: Low
User interaction: Required
Scope: Changed
Confidentiality impact: None
Integrity impact: None
Availability impact: High

Weakness class (CWE)

CWE-267 · Privilege Defined With Unsafe Actions

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:H

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.

Attack patterns (CAPEC)

ATT&CK techniques

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

Fix✗ → ✓Sep 28, 2026, 10:47 PM UTC

For records you follow, these changes also arrive as notifications. →

References

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

All records