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Vulnerability · Published Jul 20, 2021 · Assigned by oracle

CVE-2021-2443

High 7.3

In plain English

A high-severity security flaw in VM VirtualBox from Oracle Corporation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities).

Severity (CVSS 3.1)7.3High
Exploit odds (30 days)0.4%top 70.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported version that is affected is Prior to 6.1.24. Easily exploitable vulnerability allows high privileged attacker with logon to the infrastructure where Oracle VM VirtualBox executes to compromise Oracle VM VirtualBox. While the vulnerability is in Oracle VM VirtualBox, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle VM VirtualBox as well as unauthorized update, insert or delete access to some of Oracle VM VirtualBox accessible data and unauthorized read access to a subset of Oracle VM VirtualBox accessible data. Note: This vulnerability applies to Solaris x86 and Linux systems only. CVSS 3.1 Base Score 7.3 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:H).

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Ubuntu:22.04:LTSvirtualboxno fix listedUBUNTU-CVE-2021-2443
Ubuntu:24.04:LTSvirtualboxno fix listedUBUNTU-CVE-2021-2443
Ubuntu:25.10virtualboxno fix listedUBUNTU-CVE-2021-2443
Ubuntu:26.04:LTSvirtualboxno fix listedUBUNTU-CVE-2021-2443
Ubuntu:26.10virtualboxno fix listedUBUNTU-CVE-2021-2443

Affected products (as reported)

VendorProductVersions
Oracle Corporation VM VirtualBox unspecified – before 6.1.24

References