CVE-2021-20225
Severity
6.7MEDIUM
EPSS
0.1%
top 78.61%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedMar 3
Latest updateMay 24
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HExploitability: 0.8 | Impact: 5.9
Affected Packages4 packages
Also affects: Fedora 33, 34, Enterprise Linux 7.0, 8.0, 7.2, 7.3, 7.4, 7.6, 7.7, 8.2, 8.1
🔴Vulnerability Details
3📋Vendor Advisories
4Microsoft▶
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 s↗2021-03-09
Debian▶
CVE-2021-20225: grub2 - A flaw was found in grub2 in versions prior to 2.06. The option parser allows an...↗2021