# CVE-2026-69399

Azure Arc privilege escalation enabling host admin takeover.

- Page: https://www.vulneraibility.com/cve/CVE-2026-69399
- CVSS: 10.0
- Known exploited: not in CISA KEV as of our last sync
- EPSS: 0.59% (percentile 48.3)
- CISA SSVC: exploitation none, automatable yes, technical impact total (assessed 2026-09-18)
- Weakness: CWE-441
- Published: 2026-09-17

## Affected

- Microsoft Azure Arc
- Azure Arc-enabled servers
- Azure Arc agents (Windows/Linux)

## Impact

Privilege escalation in Azure Arc agents allowing attackers to gain administrative/system control on managed hosts.

## Action

Immediate action required

## Recommendation

Install MS update for CVE-2026-69399 immediately; isolate/restrict Arc-managed hosts.

## References

- [patch] https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69399

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.