Skip to the content
The Update Bureau
Security

KB5002946: all 58 vulnerabilities

Cumulative update for Office Online Server, version OOS, November 2026. The update page explains it and lists only the exploited, publicly disclosed and critical vulnerabilities; here are all of them, most severe first.

Vulnerabilities fixed

58 vulnerabilities fixed
11 critical 45 important 2 not rated
VulnerabilitySeverityCVSS
Microsoft Office Excel Remote Code Execution Vulnerability
Critical 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Critical 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Critical 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Critical 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Critical 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Critical 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Critical 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Critical 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Critical 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Critical 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Critical 7.5
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Elevation of Privilege Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Elevation of Privilege Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 7.8
Microsoft Office Excel Remote Code Execution Vulnerability
Important 7.5
Microsoft Office Excel Information Disclosure Vulnerability
Important 6.5
Microsoft Office Excel Information Disclosure Vulnerability
Important 6.5
Microsoft Office Excel Information Disclosure Vulnerability
Important 6.5
Microsoft Office Excel Information Disclosure Vulnerability
Important 6.5
Microsoft Office Excel Information Disclosure Vulnerability
Important 6.5
Not rated —
Microsoft Office Excel Remote Code Execution Vulnerability
Not rated —