What is CVE-2026-49806?
A weak authentication vulnerability has been identified in Microsoft SharePoint (CVE-2026-55040). This flaw allows an unauthorized attacker to bypass a security feature over a network. SharePoint administrators should immediately apply the security update provided by the vendor.
Azərbaycanca: Microsoft SharePoint-də zəif autentifikasiya zəifliyi aşkarlanıb (CVE-2026-55040). Bu qüsur şəbəkə üzərindən icazəsiz hücumçuya təhlükəsizlik xüsusiyyətini keçməyə imkan verir. SharePoint administratorları dərhal vendor tərəfindən təqdim olunan təhlükəsizlik yeniləməsini tətbiq etməlidirlər.
Related CVEs
link basis: same weakness class CWE-287; shared vendor: Microsoft
FAQ2
Which versions of Microsoft SharePoint are affected by CVE-2026-55040?
The provided information does not specify the affected SharePoint versions.
How can an attacker exploit the CVE-2026-55040 vulnerability?
The vulnerability can be exploited over a network, allowing an unauthorized attacker to bypass a security feature.
See also6
This explainer is AI-written from source data — skopnix's own reporting on this CVE; CVSS scores, vendors and versions are never invented. See NVD for the official record.