EUVD-2026-63688
GHSA-crh8-242h-76g6
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Network-reachable signature-verification bypass needs no auth or interaction (AV:N/AC:L/PR:N/UI:N); privilege elevation yields total impact (C:H/I:H/A:H), matching SSVC 'total'.
Primary rating from Vendor (microsoft).
CVSS VectorNVD
Lifecycle Timeline
5DescriptionNVD
Improper verification of cryptographic signature in Azure Data Factory allows an unauthorized attacker to elevate privileges over a network.
AnalysisAI
Privilege elevation in Microsoft Azure Data Factory allows a remote, unauthenticated attacker to gain elevated privileges by exploiting improper verification of a cryptographic signature. Tagged as a JWT/authentication-bypass issue, the flaw lets an attacker forge or tamper with signed tokens that the service fails to validate correctly, defeating access controls over the network. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Per the CVSS vector (AV:N/AC:L/PR:N/UI:N), exploitation is remote and low-complexity with no privileges and no user interaction claimed. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The signals are mixed and warrant careful triage. … 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 | Patch available per vendor advisory (Microsoft, https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62834); no discrete fix version number is published because Azure Data Factory is a Microsoft-managed cloud service, so remediation is generally applied server-side by Microsoft rather than installed by customers - review the MSRC advisory to confirm whether any customer action (for example, updating a self-hosted integration runtime, rotating credentials/tokens, or updating an SDK) is required, and apply it promptly if so. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, conduct a complete inventory of Azure Data Factory instances across your organization and identify all connected data sources to establish exposure scope and resource criticality. …
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External POC / Exploit Code
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