CVE-2026-88176: Microsoft Office SharePoint privilege escalation via missing authorization

CVE-2026-88176 · Severity: high · CVSS 8.8 · Published 2026-11-10

Microsoft Office SharePoint is a collaboration platform used by organizations to manage documents and share information. An authorized attacker can exploit a missing authorization check to elevate their privileges within SharePoint, potentially gaining access to sensitive documents and data they shouldn't be able to see or modify.

Technologies: Microsoft Office SharePoint. Vendors: Microsoft.

Quick answers

Is CVE-2026-88176 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-88176 being exploited in the wild.
How severe is CVE-2026-88176?
High severity, with a CVSS score of 8.8, published 10 November 2026.
Which products and versions are affected?
Microsoft Office SharePoint.
Is there a fix for CVE-2026-88176?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-88176 attacked?
It is attacked over the network, in a hosted service.
Am I affected by CVE-2026-88176?
Check whether you run Microsoft Office SharePoint. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is a missing authorization check in Microsoft Office SharePoint that allows an authenticated attacker to escalate their privileges over the network. An attacker with valid credentials can exploit improper access controls to gain elevated permissions within SharePoint. The advisory confirms the issue is exploitable remotely by an authorized user.

Affected products

  • Microsoft Office SharePoint

Timeline

  • 2026-11-10: disclosed

References

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