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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👁 39 Views

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

Related
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2025-62563
9 Dec 202517:55
–attackerkb
bdu_fstec
BDU FSTEC
Microsoft Excel Office Unreliable Pointer Dereferencing Code Execution
10 Dec 202500:00
–bdu_fstec
bdu_fstec
BDU FSTEC
Microsoft Office Memory Use After Free
10 Dec 202500:00
–bdu_fstec
bdu_fstec
BDU FSTEC
Microsoft Office Buffer Overflow Code Execution
10 Dec 202500:00
–bdu_fstec
bdu_fstec
BDU FSTEC
Microsoft Office Pointer Reuse Code Execution
10 Dec 202500:00
–bdu_fstec
bdu_fstec
BDU FSTEC
Microsoft Excel Office Unreliable Pointer Dereferencing Code Execution
10 Dec 202500:00
–bdu_fstec
circl
Circl
CVE-2025-62556
9 Dec 202517:29
–circl
circl
Circl
CVE-2025-62560
9 Dec 202517:29
–circl
circl
Circl
CVE-2025-62561
9 Dec 202517:29
–circl
circl
Circl
CVE-2025-62563
9 Dec 202517:29
–circl
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09 Dec 2025 08:00Current
7.3High risk
Vulners AI Score7.3
CVSS 3.17.8
EPSS0.00614
SSVC
39