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Description of the security update for Office Online Server: October 14, 2025 (KB5002797)

🗓️ 14 Oct 2025 14:00:00Reported by MicrosoftType 
mskb
 mskb🔗 support.microsoft.com👁 10 Views

Office Online Server security update KB5002797 fixes Excel vulnerabilities; requires the release version.

Related
ReporterTitlePublishedViews
Family
BDU FSTEC		The vulnerability of Microsoft Office, Excel, and 365 Apps for Enterprise packages relates to data type mixing errors, allowing an attacker to execute arbitrary code.
16 Oct 202500:00
–bdu_fstec
BDU FSTEC		The vulnerability of Microsoft Office and 365 Apps for Enterprise applications relates to the possibility of exploiting memory after it is freed, allowing an attacker to execute arbitrary code.
16 Oct 202500:00
–bdu_fstec
BDU FSTEC		The vulnerability of Microsoft Office, Excel, and 365 Apps for Enterprise packages lies in their ability to exploit memory after it is freed, allowing an attacker to execute arbitrary code.
17 Oct 202500:00
–bdu_fstec
BDU FSTEC		The vulnerability of Microsoft Office, Excel, and 365 Apps for Enterprise packages lies in their ability to exploit memory after it is freed, allowing an attacker to execute arbitrary code.
17 Oct 202500:00
–bdu_fstec
BDU FSTEC		The vulnerability of Microsoft Office, Excel, and 365 Apps for Enterprise packages relates to reading data beyond the buffer in memory, allowing an attacker to disclose protected information.
17 Oct 202500:00
–bdu_fstec
BDU FSTEC		The vulnerability of Microsoft Office, Excel, and 365 Apps for Enterprise packages lies in their ability to exploit memory after it is freed, allowing an attacker to execute arbitrary code.
17 Oct 202500:00
–bdu_fstec
BDU FSTEC		The vulnerability of Microsoft Office, Excel, and 365 Apps for Enterprise packages relates to reading data beyond the buffer in memory, allowing an attacker to disclose protected information.
20 Oct 202500:00
–bdu_fstec
BDU FSTEC		The vulnerability of Microsoft Office, Excel, and 365 Apps for Enterprise packages relates to data type mixing errors, allowing an attacker to execute arbitrary code.
20 Oct 202500:00
–bdu_fstec
Circl		CVE-2025-59223
14 Oct 202516:38
–circl
Circl		CVE-2025-59224
14 Oct 202516:38
–circl
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14 Oct 2025 14:00Current
7High risk
Vulners AI Score7
CVSS 3.17.8 - 8.4
EPSS0.00612
SSVC
Office Online ServerExcel vulnerabilitiesremote code executioninformation disclosuresecurity updateKB5002797build sixteen
10