# CVE-2026-69843

Authentication bypass in Microsoft Fabric enabling remote privilege escalation.

- Page: https://www.vulneraibility.com/cve/CVE-2026-69843
- CVSS: 10.0
- Known exploited: not in CISA KEV as of our last sync
- EPSS: 0.90% (percentile 59.7)
- CISA SSVC: exploitation none, automatable yes, technical impact total (assessed 2026-09-18)
- Weakness: CWE-290
- Published: 2026-09-17

## Affected

- Microsoft Fabric (cloud analytics service)
- Fabric control/admin endpoints
- Fabric tenant environments

## Impact

Remote authentication bypass via spoofing allows attackers to escalate to admin, access/modify data, and perform admin actions across Fabric.

## Action

Immediate action required

## Recommendation

Apply Microsoft's Fabric security update immediately; restrict access and monitor logs.

## References

- [patch] https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69843

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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.