What is CVE-2026-42990?
CVE-2026-55040 is a weak authentication vulnerability in Microsoft SharePoint. This flaw allows an unauthorized attacker to bypass a security feature over a network. SharePoint users should urgently apply Microsoft's security updates.
Azərbaycanca: CVE-2026-55040 Microsoft SharePoint-da zəif autentifikasiya boşluğudur. Bu boşluq şəbəkə üzərindən icazəsiz hücumçuya təhlükəsizlik funksiyasını keçməyə imkan verir. SharePoint istifadəçiləri təcili olaraq Microsoft-un təhlükəsizlik yeniləmələrini tətbiq etməlidirlər.
Related CVEs
link basis: same weakness class CWE-287; shared vendor: Microsoft
FAQ2
What can an attacker achieve by exploiting CVE-2026-55040?
This flaw allows an unauthorized attacker to bypass a security feature in Microsoft SharePoint over the network.
What should I do to mitigate the risk from CVE-2026-55040?
SharePoint users should urgently apply Microsoft's security updates.
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.