CVE-2026-109466: Microsoft Office SharePoint Elevation of Privilege Vulnerability
This Microsoft advisory covers CVE-2026-109466 in Microsoft SharePoint Server Subscription Edition.
- CVE-2026-109466
Key facts
- Vendor rating
- High, CVSS 8
- CVSS vector
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C· base score 8, scored by microsoftAttack vector: adjacent network. Attack complexity: low. Privileges required: low. User interaction: none. Scope: unchanged. Confidentiality impact: high. Integrity impact: high. Availability impact: high.- Weakness
- CWE-862: Missing Authorization
- CISA KEV
- Not listed (catalogue checked )
- Affected
- Microsoft SharePoint Server Subscription Edition 16.0.0 before 16.0.20326.20278
- Fixed in
- 16.0.20326.20278
- Source published
- Listed by VulniPulse
Compiled by VulniPulse from the linked sources. How records are collected and checked.
Affected products & platforms
Description
Missing authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over an adjacent network.
Affected product named by the advisory: Microsoft SharePoint Server Subscription Edition.
Text from the source record.
- Microsoft SharePoint Server Subscription Edition 16.0.0 before 16.0.20326.20278
Official advisory · high-confidence parse· fetched ·verify at source
How to fix CVE-2026-109466
Upgrade to a fixed release named by Microsoft:
- 16.0.20326.20278
End-of-life dates for Microsoft SharePoint Server
More Microsoft Server advisories
CVE-2026-120000Nov 10, 2026Microsoft Office SharePoint Remote Code Execution VulnerabilityCVE-2026-124210Nov 10, 2026Microsoft Office SharePoint Information Disclosure VulnerabilityCVE-2026-123391Nov 10, 2026Microsoft Office SharePoint Elevation of Privilege VulnerabilityCVE-2026-123390Nov 10, 2026Microsoft Office SharePoint Remote Code Execution VulnerabilityCVE-2026-112736Nov 10, 2026Microsoft Office SharePoint Spoofing VulnerabilityCVE-2026-111303Nov 10, 2026Microsoft Office SharePoint Spoofing Vulnerability
Microsoft Server advisories, November 2026All Microsoft Server advisories
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