CVE-2026-105720: Microsoft Office SharePoint incorrect authorization privilege escalation

CVE-2026-105720 · Severity: medium · CVSS 4.3 · Published 2026-10-13

Microsoft Office SharePoint, a platform used by organizations to manage and share documents and content, contains an authorization flaw that allows an already-authenticated user to gain elevated privileges. An attacker with valid access credentials could exploit this to perform actions beyond their assigned permissions, potentially accessing or modifying sensitive data or organizational resources.

Technologies: Microsoft Office SharePoint, Microsoft SharePoint Server. Vendors: Microsoft.

Quick answers

Is CVE-2026-105720 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-105720 being exploited in the wild.
How severe is CVE-2026-105720?
Medium severity, with a CVSS score of 4.3, published 13 October 2026.
Which products and versions are affected?
Microsoft Office SharePoint.
Is there a fix for CVE-2026-105720?
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-2026-105720 attacked?
It is attacked over the network.
Am I affected by CVE-2026-105720?
Check whether you run Microsoft Office SharePoint or Microsoft SharePoint Server. 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

An incorrect authorization check in SharePoint allows an authenticated attacker to bypass privilege restrictions and escalate their role permissions via a network-based attack. The vulnerability requires the attacker to already possess valid credentials. A fix is available from Microsoft.

Affected products

  • Microsoft Office SharePoint

Timeline

  • 2026-10-13: disclosed

References

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