What is CVE-2026-48580?
Microsoft SharePoint contains a weak authentication vulnerability (CVE-2026-55040) that allows an unauthorized attacker to bypass a security feature over a network. Affected SharePoint environments should immediately apply the security update provided by Microsoft.
Azərbaycanca: Microsoft SharePoint zəif autentifikasiya zəifliyi (CVE-2026-55040) şəbəkə üzərindən icazəsiz hücumçuya təhlükəsizlik xüsusiyyətini keçməyə imkan verir. SharePoint mühitlərini qorumaq üçün dərhal Microsoft tərəfindən təqdim edilən təhlükəsizlik yeniləməsi tətbiq edilməlidir.
Related CVEs
link basis: same weakness class CWE-287; shared vendor: Microsoft
FAQ2
What does the weak authentication vulnerability known as CVE-2026-55040 in Microsoft SharePoint allow?
It allows an unauthorized attacker to bypass a security feature over a network.
What action should be taken to protect against the CVE-2026-55040 vulnerability?
The security update provided by Microsoft should be applied immediately.
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.