What is CVE-2026-49783?
CVE-2026-55040 is a weak authentication vulnerability in Microsoft SharePoint. This flaw allows an unauthorized attacker to bypass authentication over a network and potentially perform restricted operations. Applying the security patch is critical.
Azərbaycanca: CVE-2026-55040, Microsoft SharePoint-də autentifikasiya zəifliyidir. Bu boşluq təcavüzkara şəbəkə üzərindən autentifikasiyadan yan keçərək icazəsiz əməliyyatlar aparmağa imkan verir. Təhlükəsizlik yamasının tətbiqi vacibdir.
Related CVEs
link basis: same weakness class CWE-287; shared vendor: Microsoft
FAQ2
What can an attacker achieve by successfully exploiting CVE-2026-55040 in Microsoft SharePoint?
This vulnerability allows an attacker to bypass authentication over a network and perform unauthorized operations.
How can a Microsoft SharePoint environment be protected against CVE-2026-55040?
Applying the security patch is critical.
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.