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9.9

CVE-2026-120002: SharePoint Server lets attacker gain higher privileges

CVE-2026-120002 · published 1 day ago
Summary

SharePoint Server Subscription Edition can let a user who is already allowed to access the system trick it into giving them more powerful rights across the network. This could let the attacker view, change, or delete data they shouldn't access. Apply the latest Microsoft update or patch to close the gap.

What to do
  • Update microsoft microsoft sharepoint server subscription edition to version 16.0.20326.20278 or later.
Affected software
VendorProductAffected versions
microsoft microsoft sharepoint server subscription edition < 16.0.20326.20278
Original advisory text
Microsoft SharePoint Server Elevation of Privilege Vulnerability
Incorrect authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
Fix within
Internet-facing 14 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker full control (estimated)
Severity
9.9 Critical
Exploitation
<1% chance of attack within 30 days
Type
CWE-863Incorrect Authorization
Timeline
Published10 Nov 2026
Updated12 Nov 2026
First seen10 Nov 2026
Sources
CVE-2026-120002 · MITRE
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