CVE Catalog

CVE-2026-55040

CriticalCVSS 9.1
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.67%

48th percentile - higher than 48% of all known CVEs

Summary

A vulnerability in Microsoft Office SharePoint allows an unauthorized attacker to bypass a security feature over the network due to weak authentication.

Risk Assessment

An attacker can gain unauthorized access to SharePoint data and functionality, leading to a breach of confidentiality and integrity of organizational information.

Recommendation

Apply the latest security updates provided by Microsoft for SharePoint and enable stronger authentication mechanisms such as multi-factor authentication.

Original NVD description (English source)

Weak authentication in Microsoft Office SharePoint allows an unauthorized attacker to bypass a security feature over a network.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS