CVE-2026-55040
קריטית 9.1 מנוצלת בשטח (KEV)
ניצול פעיל מאומת — קטלוג CISA KEV
- שם
- Microsoft SharePoint Weak Authentication Vulnerability
- נוסף לקטלוג
- יעד טיפול (פדרלי)
- פעולה נדרשת
- Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
תיאור (מקור, אנגלית)
Weak authentication in Microsoft Office SharePoint allows an unauthorized attacker to bypass a security feature over a network.
מדדים
- CVSS 3.1
-
9.1 (CRITICAL)
מקור הציון: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - EPSS — סבירות ניצול
- 70% (אחוזון 99) נכון ל-1 בנובמבר 2026
- CWE
- CWE-1390
מוצרים מושפעים
microsoft: sharepoint server
קישורים
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55040 PatchVendor Advisory
- https://github.com/sfewer-r7/CVE-2026-55040 Exploit
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-202… ExploitThird Party Advisory
- https://www.rapid7.com/blog/post/ra-microsoft-sharepoint-jwt-token-authenticat… US Government Resource