CVE-2026-84165
Auth user can execute commands in other users' VMs via OpenNebula one.vm.exec.
Is CVE-2026-84165 being exploited?
Not confirmed. CVE-2026-84165 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.50% probability of exploitation in the next 30 days.
How severe is CVE-2026-84165?
CVE-2026-84165 is rated High with a CVSS score of 8.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-84165?
Yes. A fix has been recorded for CVE-2026-84165. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-84165 affect?
CVE-2026-84165 affects OpenNebula < 7.4, one.vm.exec API, VMs with QEMU guest agent enabled. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-84165?
Upgrade to OpenNebula 7.4; or disable qemu-agent and restrict API access
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated low-privilege user can run commands inside other users' VMs via QEMU agent, enabling data theft, lateral movement, or VM compromise.
Immediate action required
- affected< 7.4
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.