CVE-2026-26114

HIGH
2026-03-10 [email protected]
8.8
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 21:55 vuln.today
CVE Published
Mar 10, 2026 - 18:18 nvd
HIGH 8.8

Tags

Microsoft Deserialization Sharepoint Server

Description

Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

Analysis

Remote code execution in Microsoft SharePoint Server through unsafe deserialization of untrusted data allows authenticated attackers to execute arbitrary code with high privileges over the network. The vulnerability requires valid user credentials but no user interaction, making it exploitable by any authorized account. …

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Remediation

Within 24 hours: Inventory all SharePoint deployments and identify systems running vulnerable versions; restrict SharePoint access to essential personnel only and enable enhanced logging. Within 7 days: Implement network segmentation to isolate SharePoint servers; conduct threat hunting for indicators of exploitation; brief stakeholders on business continuity contingencies. …

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Priority Score

45
Low Medium High Critical
KEV: 0
EPSS: +0.5
CVSS: +44
POC: 0

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CVE-2026-26114 vulnerability details – vuln.today
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