Microsoft Fabric vulnerabilities

3 CVEs affecting Microsoft Fabric, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2026-69843, published 2026-09-18.

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Known exploited (CISA KEV) first, then by EPSS exploit probability.

• CVE-2026-63509, published 2026-08-20. High severity, CVSS 8.8. EPSS: 1% chance of exploitation in the next 30 days. Relative path traversal in Microsoft Fabric allows an authorized attacker to elevate privileges over a network.
• CVE-2026-69843, published 2026-09-18. Critical severity, CVSS 10.0. EPSS: 0.9% chance of exploitation in the next 30 days. Authentication bypass by spoofing in Microsoft Fabric allows an unauthorized attacker to elevate privileges over a network.
• CVE-2026-70178, published 2026-09-03. High severity, CVSS 8.8. EPSS: 0.6% chance of exploitation in the next 30 days. Missing authorization in Microsoft Fabric allows an authorized attacker to elevate privileges over a network.