What is CVE-2026-50343?
CVE-2026-55040 is a weak authentication vulnerability in Microsoft SharePoint that allows an unauthorized attacker to bypass a security feature over a network. Its active exploitation has been confirmed. SharePoint administrators should immediately apply the security update released by Microsoft.
Azərbaycanca: CVE-2026-55040, Microsoft SharePoint-da aşkarlanan zəif autentifikasiya boşluğudur. Bu boşluq təcavüzkara şəbəkə üzərindən təhlükəsizlik funksiyasını keçməyə imkan verir, istismar faktı təsdiqlənib. SharePoint administratorları təcili olaraq Microsoft tərəfindən buraxılmış təhlükəsizlik yeniləməsini tətbiq etməlidirlər.
Related CVEs
link basis: same weakness class CWE-287; shared vendor: Microsoft
FAQ2
What product is affected by CVE-2026-55040 and what is its type?
CVE-2026-55040 is a weak authentication vulnerability discovered in Microsoft SharePoint.
Has active exploitation of this vulnerability been confirmed?
Yes, the exploitation of CVE-2026-55040 has been confirmed.
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.