Is CVE-2022-2601 in the CISA KEV catalog?

No. CVE-2022-2601 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-2601?

CVE-2022-2601 has a CVSS v3 base score of 8.6 (HIGH).

What is the EPSS score for CVE-2022-2601?

CVE-2022-2601 has an EPSS score of 0.51% (40th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-2601?

Upgrade grub2 on debian 11 to 2.06-3~deb11u4 or later. Fixes are available for 61 affected products.

CVE & CISA-KEV Catalog

CVE-2022-2601

HIGH

8.6

CVSS v3

NVD

Description

A buffer overflow was found in grub_font_construct_glyph(). A malicious crafted pf2 font can lead to an overflow when calculating the max_glyph_size value, allocating a smaller than needed buffer for the glyph, this further leads to a buffer overflow and a heap based out-of-bounds write. An attacker may use this vulnerability to circumvent the secure boot mechanism.

CWE-122Heap-based Buffer Overflow CWE-787Out-of-bounds Write

How to fix

Remediation Available

grub2Debian

Fixed in:2.06-3~deb11u4CVE-2022-2601

Fixed in:2.06-5CVE-2022-2601

Windows 10Windows

Install:KB5055547Microsoft

Windows 10 Version 1607Windows

Install:KB5055521Microsoft

Windows 10 Version 1809Windows

Install:KB5055519Microsoft

Windows 10 Version 21H2Windows

Install:KB5055518Microsoft

Windows 10 Version 22H2Windows

Install:KB5055518Microsoft

Windows 11 Version 22H2Windows

Install:KB5055528Microsoft

Windows 11 Version 23H2Windows

Install:KB5055528Microsoft

Windows 11 Version 24H2Windows

Install:KB5055528Microsoft

Install:KB5055523Microsoft

Windows 11 version 21H2Windows

Install:KB5041592Microsoft

Windows Server 2012Windows

Install:KB5055581Microsoft

Windows Server 2012 (Server Core installation)Windows

Install:KB5055581Microsoft

Windows Server 2012 R2Windows

Install:KB5055557Microsoft

Windows Server 2012 R2 (Server Core installation)Windows

Install:KB5055557Microsoft

Windows Server 2016Windows

Install:KB5055521Microsoft

Windows Server 2016 (Server Core installation)Windows

Install:KB5055521Microsoft

Windows Server 2019Windows

Install:KB5055519Microsoft

Windows Server 2019 (Server Core installation)Windows

Install:KB5055519Microsoft

Windows Server 2022Windows

Install:KB5055526Microsoft

Windows Server 2022 (Server Core installation)Windows

Install:KB5055526Microsoft

Windows Server 2022, 23H2 Edition (Server Core installation)Windows

Install:KB5055527Microsoft

grub2Red Hat / RHEL

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

Fixed in:1:2.02-0.87.el7_9.14.ppc64RHSA-2024:2002

grub2Rocky

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

Fixed in:1:2.02-0.87.el7_9.14.ppc64RHSA-2024:2002

grub2-commonRed Hat / RHEL

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-commonRocky

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-debuginfoRocky

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

Fixed in:1:2.02-0.87.el7_9.14.ppc64RHSA-2024:2002

grub2-debuginfoRed Hat / RHEL

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

Fixed in:1:2.02-0.87.el7_9.14.ppc64RHSA-2024:2002

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-efi-aa64-modulesRed Hat / RHEL

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-efi-aa64-modulesRocky

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-efi-ia32Red Hat / RHEL

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-efi-ia32Rocky

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-efi-ia32-cdbootRocky

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-efi-ia32-cdbootRed Hat / RHEL

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-efi-ia32-modulesRed Hat / RHEL

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-efi-ia32-modulesRocky

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-efi-x64Red Hat / RHEL

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-efi-x64Rocky

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-efi-x64-cdbootRed Hat / RHEL

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-efi-x64-cdbootRocky

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-efi-x64-modulesRocky

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-efi-x64-modulesRed Hat / RHEL

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-pcRed Hat / RHEL

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-pcRocky

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-pc-modulesRed Hat / RHEL

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-pc-modulesRocky

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-ppc-modulesRocky

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-ppc-modulesRed Hat / RHEL

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-ppc64Red Hat / RHEL

Fixed in:1:2.02-0.87.el7_9.14.ppc64RHSA-2024:2002

grub2-ppc64Rocky

Fixed in:1:2.02-0.87.el7_9.14.ppc64RHSA-2024:2002

grub2-ppc64-modulesRocky

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-ppc64-modulesRed Hat / RHEL

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-ppc64leRocky

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-ppc64leRed Hat / RHEL

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-ppc64le-modulesRocky

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-ppc64le-modulesRed Hat / RHEL

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-toolsRocky

Fixed in:1:2.02-0.87.el7_9.14.ppc64RHSA-2024:2002

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-toolsRed Hat / RHEL

Fixed in:1:2.02-0.87.el7_9.14.ppc64RHSA-2024:2002

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-tools-extraRocky

Fixed in:1:2.02-0.87.el7_9.14.ppc64RHSA-2024:2002

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-tools-extraRed Hat / RHEL

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

Fixed in:1:2.02-0.87.el7_9.14.ppc64RHSA-2024:2002

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-tools-minimalRed Hat / RHEL

Fixed in:1:2.02-0.87.el7_9.14.ppc64RHSA-2024:2002

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

grub2-tools-minimalRocky

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

Fixed in:1:2.02-0.87.el7_9.14.ppc64RHSA-2024:2002

Fixed in:1:2.02-0.87.el7_9.14RHSA-2024:2002

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.51%probability of exploitation in 30 days

40thpercentile

Moderate risk: more likely to be exploited than 40% of all known CVEs.

References

Third-Party Advisory1

bugzilla.redhat.com

Other references3

Related Vulnerabilities

Other CWE-122 (Heap-based Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2024-26256	High	7.8	88%	-	Fix
CVE-2020-25687	Medium	5.9	87%	-	Fix
CVE-2009-3459	High	8.8	86%	KEV	Fix
CVE-2021-21017	High	8.8	86%	KEV	-
CVE-2020-25683	Medium	5.9	86%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-27.