EUVD-2026-73740
GHSA-p8qc-6whh-2p3x
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Network-accessible SharePoint endpoint, no complexity barriers, authenticated low-privilege user required, no interaction needed, full RCE impact on the vulnerable system.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Missing authorization in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
AnalysisAI
Remote code execution in Microsoft SharePoint Server Subscription Edition is reachable by authenticated network users due to missing authorization checks (CWE-862). An attacker holding any valid SharePoint credentials can invoke privileged server-side functionality without proper authz enforcement, achieving full compromise of confidentiality, integrity, and availability. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid SharePoint account with at least low-level authenticated access (CVSS PR:L) to the target SharePoint Server Subscription Edition instance running a build prior to 16.0.20326.20074. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.8 score with vector AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H reflects a realistic and serious threat: any authenticated SharePoint user over the network can trigger RCE with no complexity barriers and no need for victim interaction. … 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 | Apply the vendor-released cumulative update bringing SharePoint Server Subscription Edition to build 16.0.20326.20074 or later, available via the Microsoft Update Catalog and the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69465. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all Microsoft SharePoint Server Subscription Edition installations and document their current versions against Microsoft's advisory to determine exposure scope. …
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Same weakness CWE-862 – Missing Authorization
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External POC / Exploit Code
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