What is CVE-2026-49793?
CVE-2026-55040 is a weak authentication vulnerability in Microsoft SharePoint that allows an unauthorized attacker to bypass a security feature over a network. This flaw could enable network-based exploitation to circumvent authentication mechanisms. Administrators are advised to urgently apply the security update provided by Microsoft.
Azərbaycanca: CVE-2026-55040 Microsoft SharePoint-da şəbəkə üzərindən autentifikasiya mexanizmini keçməyə imkan verən zəif autentifikasiya zəifliyidir. Bu boşluq icazəsiz hücumçuya təhlükəsizlik funksiyasını bypass etməyə şərait yaradır. SharePoint administratorlarına təcili olaraq Microsoft tərəfindən buraxılmış təhlükəsizlik yeniləməsini tətbiq etmələri tövsiyə olunur.
Related CVEs
link basis: same weakness class CWE-287; shared vendor: Microsoft
FAQ2
What security issue does CVE-2026-55040 cause in Microsoft SharePoint?
This vulnerability is a weak authentication flaw that allows an unauthorized attacker to bypass a security feature over a network by circumventing authentication mechanisms.
What is recommended for administrators to protect against CVE-2026-55040?
SharePoint administrators are advised to urgently apply the security update provided by Microsoft.
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.