CVE-2026-21981

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{}

{"analysis": {"en": {"generated_at": "2026-04-18T04:23:05.891584+00:00", "value": {"mitigation_remediation": ["Upgrade Oracle VM VirtualBox to the latest patch or version that addresses the Core access control flaw.", "Limit local user accounts with high privileges on hosts running VirtualBox and enforce least\u2011privilege principles.", "Monitor VirtualBox logs for abnormal read or denial\u2011of\u2011service activity and address any configuration that might expose sensitive data."], "summary": {"action": "Apply Patch", "impact": "Unauthorized read access and partial denial of service with high privileged attacker in Oracle VM VirtualBox"}, "threat_synthesis": {"affected_systems": "Oracle Corporation\u2019s Oracle VM VirtualBox version 7.1.14 and 7.2.4 are affected. These product releases contain the Core component that contains the vulnerability. No other versions or products were listed as affected.", "description_and_impact": "This vulnerability in Oracle VM VirtualBox\u2019s Core component enables a local user with high privileges to compromise the VirtualBox process. The flaw allows the attacker to read a subset of data that VirtualBox can access and to trigger a partial denial of service, degrading the availability of the virtualization platform. The weakness corresponds to an access control issue, as indicated by CWE\u2011269. The impact is limited to a single host where VirtualBox is installed, with potential downstream effects if the compromised VirtualBox is used to provide services to other products.", "risk_and_exploitability": "The quantified CVSS score of 4.6 reflects modest confidentiality and availability impact, while the EPSS score of less than one percent shows that exploitation is expected to be rare. The attack requires local presence and high privilege on the host, and the vulnerability\u2019s scope changes to affected components, meaning compromise is limited to the VirtualBox instance. Given the low probability of exploitation and absence from the KEV catalog, the immediate risk to external attackers is low, but internal high\u2011privileged users retain a potential threat."}}}}, "created": "2026-04-18T04:30:35.826696+00:00", "title": "High-Privilege Unauthorized Read and Partial Denial of Service in Oracle VM VirtualBox", "updated": "2026-04-18T04:30:35.826741+00:00", "vendors": []}