CVE-2021-20225

MEDIUM
6.7
CVSS Score
Published: March 3, 2021 at 04:44 PM UTC
Updated: June 17, 2026 at 03:33 AM UTC
8 products affected across 4 vendorsFedoraEnterprise LinuxEnterprise Linux Workstation

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Severity
MEDIUM6.7
Exploit prediction
EPSS 1%

Description

A flaw was found in grub2 in versions prior to 2.06. The option parser allows an attacker to write past the end of a heap-allocated buffer by calling certain commands with a large number of specific short forms of options. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-787

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