Vulnerability · Published Jan 20, 2026 · Assigned by oracle

CVE-2026-21984

High 7.5

In plain English

A high-severity improper access control in Oracle 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 0.2% (higher than 14% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.2%top 86.1% 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). Supported versions that are affected are 7.1.14 and 7.2.4. Difficult to exploit 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 (scope change). Successful attacks of this vulnerability can result in takeover of Oracle VM VirtualBox. CVSS 3.1 Base Score 7.5 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H).

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Ubuntu:22.04:LTS	virtualbox	no fix listed	UBUNTU-CVE-2026-21984
Ubuntu:24.04:LTS	virtualbox	no fix listed	UBUNTU-CVE-2026-21984
Ubuntu:25.10	virtualbox	no fix listed	UBUNTU-CVE-2026-21984
Ubuntu:26.04:LTS	virtualbox	no fix listed	UBUNTU-CVE-2026-21984
Ubuntu:26.10	virtualbox	no fix listed	UBUNTU-CVE-2026-21984

Affected products (as reported)

Vendor	Product	Versions
Oracle Corporation	Oracle VM VirtualBox	7.1.147.2.4

Weakness: CWE-284 · Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

References

Oracle Advisory vendor-advisory