What is CVE-2026-55040?
CVE-2026-55040 is a weak authentication vulnerability in Microsoft SharePoint that allows an unauthorized attacker to bypass a security feature over a network. It is being actively exploited in the wild, so urgent patching is strongly recommended.
Azərbaycanca: CVE-2026-55040 Microsoft SharePoint-da zəif autentifikasiya boşluğudur. Şəbəkə üzərindən icazəsiz hücumçuya təhlükəsizlik funksiyasını keçməyə imkan verir. Bu boşluq aktiv şəkildə istismar edildiyi üçün təcili patch tətbiqi tövsiyə olunur.
Related CVEs
link basis: same weakness class CWE-287; shared vendors: Adobe, Microsoft
FAQ2
What platform does CVE-2026-55040 affect?
CVE-2026-55040 is a weak authentication vulnerability that exists in Microsoft SharePoint.
Why is urgent patching recommended for CVE-2026-55040?
Urgent patching is strongly recommended because this vulnerability is being actively exploited in the wild.
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.