SEPTEMBER 13, 2026
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Case File

CVE-2026-56164

MEDIUM · CVSS 5.3 EPSS 22.44% CISA KEV · Actively Exploited

Source: NVD + CISA KEV + EPSS · Published 2026-07-14 · Last synced 2026-08-13

CyberRota Analysis

AI-Generated

Microsoft Office SharePoint is vulnerable due to a missing authentication mechanism for critical functions, enabling unauthorized attackers to elevate their privileges over a network. This could lead to unauthorized access to sensitive data and functionalities within SharePoint environments. Organizations using Microsoft Office SharePoint should prioritize addressing this vulnerability to mitigate potential security risks.

CISA KEV Details

Status: This CVE is listed in CISA's Known Exploited Vulnerabilities catalog.

Ransomware use: Unknown

Added to KEV: 2026-07-14

Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

CVE
CVE-2026-56164
Severity
MEDIUM
CVSS
5.3
EPSS
22.44%
Microsoft SharePoint Office

Original NVD Description

Missing authentication for critical function in Microsoft Office SharePoint allows an unauthorized attacker to elevate privileges over a network.

Related CVEs

Other vulnerabilities affecting the same vendor(s)