What is CVE-2026-58526?
CVE-2026-55040 is a weak authentication vulnerability in Microsoft SharePoint allowing an unauthorized attacker to bypass a security feature over a network. Listed in the KEV catalog, this vulnerability is actively exploited and requires immediate patching.
Azərbaycanca: CVE-2026-55040: Microsoft SharePoint zəif autentifikasiya zəifliyidir ki, bu, şəbəkə üzərindən icazəsiz hücumçuya təhlükəsizlik funksiyasını keçməyə imkan verir. Bu zəiflik KEV kataloqundadır və aktiv istismar olunur, dərhal yeniləmə tətbiq edilməlidir.
Related CVEs
link basis: same weakness class CWE-287; shared vendor: Microsoft
FAQ2
What does the CVE-2026-55040 Microsoft SharePoint vulnerability allow?
CVE-2026-55040 is a weak authentication vulnerability in Microsoft SharePoint that allows an unauthorized attacker to bypass a security feature over a network.
Why is immediate patching necessary for CVE-2026-55040?
This vulnerability is listed in the KEV catalog and is actively exploited, so immediate patching is required to protect systems.
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.