What is CVE-2026-50440?
CVE-2026-50440 (also tracked as CVE-2026-55040 under KEV) is a weak authentication vulnerability in Microsoft SharePoint that allows an unauthorized attacker to bypass a security feature over a network. This flaw enables network-based attackers to circumvent authentication mechanisms. Immediate patching with the update provided by Microsoft is strongly recommended.
Azərbaycanca: CVE-2026-50440 (KEV olaraq CVE-2026-55040 ilə əlaqələndirilib) Microsoft SharePoint-də şəbəkə üzərindən autentifikasiya mexanizmini keçməyə imkan verən zəif autentifikasiya zəifliyidir. Bu zəiflikdən istifadə edərək icazəsiz hücumçu təhlükəsizlik funksiyasını bypass edə bilər. Dərhal Microsoft tərəfindən təqdim olunan təhlükəsizlik yeniləməsini tətbiq etmək tövsiyə olunur.
Related CVEs
link basis: same weakness class CWE-287; shared vendor: Microsoft
FAQ2
What is the CVE-2026-50440 vulnerability and which platform does it affect?
CVE-2026-50440 is a weak authentication vulnerability discovered in Microsoft SharePoint. This flaw allows an unauthorized attacker to bypass a security feature over a network by circumventing the authentication mechanism.
What action is recommended to protect against CVE-2026-50440?
To protect against this vulnerability, it is strongly recommended to immediately 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.