SEPTEMBER 12, 2026
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Case File

CVE-2026-55040

CRITICAL · CVSS 9.1 EPSS 2.96% Public Exploit

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 weak authentication mechanisms that enable unauthorized attackers to bypass security features over a network. This critical vulnerability, rated 9.1 on the CVSS scale, poses a significant risk of unauthorized access to sensitive information and resources. Organizations using affected Microsoft products should prioritize immediate remediation to mitigate potential exploitation.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-55040
Severity
CRITICAL
CVSS
9.1
EPSS
2.96%
Microsoft SharePoint Office

Original NVD Description

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

Related CVEs

Other vulnerabilities affecting the same vendor(s)