Microsoft Azure Arc is a widely used enterprise cloud/hybrid management product; a CRITICAL privilege escalation could disrupt many organizations.
CVE-2026-65816
Azure Arc name-resolution flaw allows network privilege escalation.
Is CVE-2026-65816 being exploited?
Not confirmed. CVE-2026-65816 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 0.52% probability of exploitation in the next 30 days.
How severe is CVE-2026-65816?
CVE-2026-65816 is rated Critical with a CVSS score of 10.0. 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-2026-65816?
Yes. A fix has been recorded for CVE-2026-65816. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-65816 affect?
CVE-2026-65816 affects Microsoft Azure Arc, Azure Arc-enabled servers, Azure Arc management plane. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-65816?
Apply vendor patch immediately when released; restrict Arc network access and monitor logs.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Improper name/reference resolution lets remote attacker elevate privileges on Azure Arc-managed resources, enabling lateral movement and resource control.
Immediate action required