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CVE-2026-87311: Oracle VM VirtualBox may crash from local user

CVE-2026-87311 · published 15 days ago

Summary

Version 7.2.16 of Oracle VM VirtualBox can be forced to hang or repeatedly crash by anyone who already has a low‑level account on the host machine. This results in a denial of service, stopping virtual machines from running. Apply the latest Oracle VirtualBox update or any vendor‑provided patch as soon as possible.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software

Ecosystem	Vendor	Product	Affected versions
–	oracle corporation	oracle vm virtualbox	7.2.16
Ubuntu:16.04:LTS	canonical	virtualbox	All versions

Original advisory text

Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported version that is affected is 7.2.16. Difficult to exploit vulnerability allows low privi...

Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported version that is affected is 7.2.16. Difficult to exploit vulnerability allows low 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 unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle VM VirtualBox. CVSS 3.1 Base Score 5.6 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H).

References

https://www.oracle.com/security-alerts/cpuoct2026.html
https://ubuntu.com/security/CVE-2026-87311 Third Party Advisory
https://www.cve.org/CVERecord?id=CVE-2026-87311 Third Party Advisory

Fix within

Internet-facing 60 days

Internal At next upgrade

Not known to be exploited
Needs hands-on effort to exploit
Gives an attacker partial control

Severity

5.6 Medium

Exploitation

<1% chance of attack within 30 days

Type

CWE-284Improper Access Control

Timeline

Published20 Oct 2026

Updated29 Oct 2026

First seen20 Oct 2026

Sources

CVE-2026-87311 · NVD

CVE-2026-87311 · MITRE

UBUNTU-CVE-2026-87311 · OSV

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