How severe is CVE-2021-20233?

This vulnerability has a severity rating of HIGH with a CVSS score of 8.2 out of 10.

What type of vulnerability is CVE-2021-20233?

This is classified as CWE-787, which is a common weakness in software security.

CVE-2021-20233 - HIGH Severity | CVSS 8.2

Vulnerability Description

A flaw was found in grub2 in versions prior to 2.06. Setparam_prefix() in the menu rendering code performs a length calculation on the assumption that expressing a quoted single quote will require 3 characters, while it actually requires 4 characters which allows an attacker to corrupt memory by one byte for each quote in the input. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Related Vulnerabilities

CVE-2018-11806

HIGH

CVSS:8.2(High)

m_cat in slirp/mbuf.c in Qemu has a heap-based buffer overflow via incoming fragmented datagrams.

CWE-7872018

CVE-2018-1635

HIGH

CVSS:8.2(High)

Stack-based buffer overflow in oninit in IBM Informix Dynamic Server Enterprise Edition 12.1 allows an authenticated user to execute predefined code with root privileges, such as escalating to a root ...

CWE-7872018

CVE-2018-1636

HIGH

CVSS:8.2(High)

CWE-7872018

CVE-2018-3880

HIGH

CVSS:8.2(High)

An exploitable stack-based buffer overflow vulnerability exists in the database 'find-by-cameraId' functionality of video-core's HTTP server of Samsung SmartThings Hub STH-ETH-250 - Firmware version 0...

CWE-7872018

CVE-2019-12325

HIGH

CVSS:8.2(High)

The Htek UC902 VoIP phone web management interface contains several buffer overflow vulnerabilities in the firmware version 2.0.4.4.46, which allow an attacker to crash the device (DoS) without authen...

CWE-7872019

CVE-2019-2867

HIGH

CVSS:8.2(High)

Vulnerability in the Oracle VM VirtualBox component of Oracle Virtualization (subcomponent: Core). Supported versions that are affected are Prior to 5.2.32 and prior to 6.0.10. Easily exploitable vuln...

CWE-7872019