Azure Arc is widely used enterprise hybrid/cloud management; a remote privilege-escalation in Arc is high-impact and newsworthy across organizations.
CVE-2026-70009
Path traversal in Azure Arc enables remote privilege escalation.
Is CVE-2026-70009 being exploited?
Not confirmed. CVE-2026-70009 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 0.47% probability of exploitation in the next 30 days.
How severe is CVE-2026-70009?
CVE-2026-70009 is rated Critical with a CVSS score of 9.3. 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-2026-70009?
Yes. A fix has been recorded for CVE-2026-70009. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-70009 affect?
CVE-2026-70009 affects Microsoft Azure Arc, Azure Arc agents, Azure Arc-enabled servers. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-70009?
Apply vendor updates ASAP; if unavailable, restrict Arc network access and follow vendor mitigations.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote path-traversal allows attackers to escape restricted directories and elevate privileges over the network, potentially enabling code execution or full system compromise.
Immediate action required