CVE-2026-84165

Lack of authorisation in OpenNebula by OpenNebula Systems

HIGH
8.7
CVSS Score
Published: September 1, 2026 at 10:49 AM UTC
Updated: September 1, 2026 at 09:01 PM UTC
1 product affected across 1 vendorOpenNebula

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Severity
HIGH8.7
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

A vulnerability relating to incorrect access control in OpenNebula by OpenNebula Systems, affecting all versions prior to 7.4. This vulnerability could allow an authenticated user with basic permissions to execute commands on virtual machines belonging to other users via the `one.vm.exec` function, without proper verification of access permissions. To exploit the vulnerability, it is only necessary to know the virtual machine’s identifier and for qemu-agent to be enabled on that machine. Exploitation could allow commands to be executed and compromise the confidentiality, integrity and availability of the affected virtual machines.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 7.4
Affected range stops below 7.4, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.7HIGHINCIBE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-284

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