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CVE-2026-88164

8.8 high SSVC exploitation: none Analyzed
NVD · CVE.org

Missing authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.

Fix

Microsoft's update · Important

  • KB5002927 — Microsoft SharePoint Server Subscription Edition · build 16.0.20326.20190 · restart required

From the 2026-Oct release note of Microsoft's Security Update Guide, revised 2026-10-28 · Exploitation Less Likely.

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 5

  1. Cpes+1 CPE criteria (now 1)NVD modified 2026-10-20 16:26
  2. StatusPublished → AnalyzedNVD modified 2026-10-20 16:26
  3. StatusAwaiting Analysis → PublishedNVD modified 2026-10-19 19:40
  4. StatusReceived → Awaiting AnalysisNVD modified 2026-10-15 20:39
  5. First seenCVSS 8.8NVD modified 2026-10-14 18:19

Affected (CPE criteria) 1

  • cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:*

References 1