Microsoft · Security update · August 11, 2026

KB5002893: August 2026 security update

KB5002893, released August 11, 2026, fixes 29 CVEs in Microsoft SharePoint Server Subscription Edition. One of them is being exploited (CVE-2026-65660); 1 on CISA KEV. Patch Radar priority: Patch now.

Patch now1 on CISA KEV

CVEs closed

3 rated Critical

Exploited

CVE-2026-65660

Exploitation more likely

Microsoft's assessment

Highest EPSS

0.0985

95th percentile

Priority of the 29 CVEs

Patch now 1
                                Urgent 5
                                High 11
                                Routine 12

Applies to

Product
Microsoft SharePoint Server Subscription Edition

CVEs this fix closes

Priority	CVE	Component	Impact	CVSS	EPSS	Exploitation
Patch now	CVE-2026-65660	Microsoft Office SharePoint	Remote Code Execution	8.8	0.0985	KEVExploited
Urgent	CVE-2026-65665	Microsoft Office SharePoint	Remote Code Execution	8.8	0.0169	More likely
Urgent	CVE-2026-63520	Microsoft Office SharePoint	Remote Code Execution	8.1	0.0096	More likely
Urgent	CVE-2026-62827	Microsoft Office SharePoint	Elevation of Privilege	8.8	0.0094	Exploitation Less Likely
Urgent	CVE-2026-64921	Microsoft Office SharePoint	Elevation of Privilege	8.8	0.0094	Exploitation Less Likely
Urgent	CVE-2026-70355	Microsoft Office SharePoint	Elevation of Privilege	7.3	0.0078	More likely
High	CVE-2026-63514	Microsoft Office SharePoint	Remote Code Execution	8.8	0.0204	Exploitation Less Likely
High	CVE-2026-64901	Microsoft Office SharePoint	Remote Code Execution	8.8	0.0204	Exploitation Less Likely
High	CVE-2026-65658	Microsoft Office SharePoint	Remote Code Execution	8.8	0.0204	Exploitation Less Likely
High	CVE-2026-65663	Microsoft Office SharePoint	Remote Code Execution	8.8	0.0204	Exploitation Less Likely
High	CVE-2026-66808	Microsoft Office SharePoint	Remote Code Execution	8.8	0.0204	Exploitation Less Likely
High	CVE-2026-70321	Microsoft Office SharePoint	Remote Code Execution	8.8	0.0169	Exploitation Less Likely
High	CVE-2026-70306	Microsoft Office SharePoint	Spoofing	9.3	0.0101	Exploitation Less Likely
High	CVE-2026-70324	Microsoft Office SharePoint	Elevation of Privilege	8.8	0.0094	Exploitation Less Likely
High	CVE-2026-70326	Microsoft Office SharePoint	Elevation of Privilege	8.8	0.0078	Exploitation Less Likely
High	CVE-2026-64900	Microsoft Office SharePoint	Spoofing	7.3	0.0065	N/A
High	CVE-2026-57105	Microsoft Office SharePoint	Spoofing	8.0	0.0062	Exploitation Less Likely
Routine	CVE-2026-63516	Microsoft Office SharePoint	Spoofing	6.5	0.0187	Exploitation Less Likely
Routine	CVE-2026-62837	Microsoft Office SharePoint	Information Disclosure	6.5	0.0123	Exploitation Less Likely
Routine	CVE-2026-58639	Microsoft Office SharePoint	Spoofing	6.5	0.0091	Exploitation Less Likely
Routine	CVE-2026-62839	Microsoft Office SharePoint	Spoofing	6.5	0.0091	Exploitation Less Likely
Routine	CVE-2026-63512	Microsoft Office SharePoint	Tampering	6.5	0.0073	Exploitation Less Likely
Routine	CVE-2026-62917	Microsoft Office SharePoint	Spoofing	4.6	0.0058	Exploitation Less Likely
Routine	CVE-2026-64897	Microsoft Office SharePoint	Spoofing	4.6	0.0058	Exploitation Less Likely
Routine	CVE-2026-64902	Microsoft Office SharePoint	Spoofing	4.6	0.0058	N/A

Released the same day

KB5002755
Microsoft Outlook 2016 (32-bit edition), Microsoft Outlook 2016 (64-bit edition)
KB5002791
Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition)
KB5002795
Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition)
KB5002813
Microsoft Access 2016 (32-bit edition), Microsoft Access 2016 (64-bit edition)
KB5002832
Microsoft Access 2016 (32-bit edition), Microsoft Access 2016 (64-bit edition)
KB5002894
Microsoft SharePoint Server 2019
KB5002896
Microsoft SharePoint Server 2019
KB5002897
Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition)
KB5002899
Microsoft PowerPoint 2016 (32-bit edition), Microsoft PowerPoint 2016 (64-bit edition)
KB5002900
Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition)
KB5002901
Microsoft Word 2016 (32-bit edition), Microsoft Word 2016 (64-bit edition)
KB5002902
Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition)

Vendor advisory

https://support.microsoft.com/help/5002893

Our write-up

August 2026 Patch Tuesday: The Only One Under Attack Was Rated Important

For tools and AI agents

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