EUVD-2026-63620
GHSA-3r75-wcfw-gxm8
Severity by source
AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Network-facing endpoint with low complexity and no UI; a low-privileged tenant identity is required (PR:L); path traversal crosses a tenant/authority boundary (S:C) yielding full C/I/A impact.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
2DescriptionCVE.org
Relative path traversal in Microsoft Fabric allows an authorized attacker to elevate privileges over a network.
AnalysisAI
Privilege elevation in Microsoft Fabric lets an authenticated, low-privileged user abuse a relative path traversal weakness (CWE-23) over the network to reach resources outside their intended scope and gain higher privileges. Microsoft rates this CVSS 9.9 with a scope change, reflecting that a compromised tenant identity can cross authorization boundaries in the multi-tenant analytics platform. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated identity with at least low privileges in the target Microsoft Fabric environment (CVSS PR:L), reachable over the network (AV:N) with low complexity and no user interaction (AC:L/UI:N). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The signals are largely aligned toward high real-world risk: CVSS 3.1 9.9 with AV:N/AC:L/PR:L/UI:N/S:C and C:H/I:H/A:H means network reach, low complexity, only low privileges required, no user interaction, and full confidentiality/integrity/availability impact across a scope boundary. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Because Microsoft Fabric is a vendor-operated SaaS service, remediation is delivered server-side by Microsoft; no customer-installed patch version is published (Patch available per vendor advisory - see https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-63509). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Microsoft Fabric instances in your environment and document current versions deployed. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
Same weakness CWE-23 – Relative Path Traversal
View allSame technique Path Traversal
View allShare
External POC / Exploit Code
Leaving vuln.today