VULNERABILITY INTELLIGENCE

CVE-2021-20225

CVSS score6.7 MEDIUM
EPSS probability1.01%
CISA KEVNot currently listed
Published2021-03-03
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

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.

Weakness classification

  • secalert@redhat.com: CWE-787
  • nvd@nist.gov: CWE-787

Primary references