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Description of the security update for Office Online Server: December 9, 2025 (KB5002817)

🗓️ 09 Dec 2025 08:00:00Reported by MicrosoftType 
mskb
 mskb
🔗 support.microsoft.com👁 11 Views

Office Online Server security update fixes Excel remote code execution CVEs 2025-62556 to 62560.

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09 Dec 2025 08:00Current
7.1High risk
Vulners AI Score7.1
CVSS 3.17.8
EPSS0.00056
SSVC
11