Security

Microsoft security updates and public advisory evidence: affected products, fixing updates, exploitation and source coverage.

Security Update Guide CISA KEV

CVEs · all collected releases

30 matches · most urgent first CSV Text

Fixed by KB5002923Clear

CVE	Vulnerability	Severity	CVSS	EPSS	Impact	Status	Fixed by
CVE-2026-78509	Microsoft Office Outlook Remote Code Execution VulnerabilityMicrosoft Office Outlook	Critical	9.8	1.0%	RCENetwork	Revised 17 Sep	KB5002923
CVE-2026-78525	Microsoft Office Outlook Remote Code Execution VulnerabilityMicrosoft Office Outlook	Critical	8.8	0.8%	RCENetwork	Revised 17 Sep	KB5002923
CVE-2026-78520	Microsoft Office Outlook Information Disclosure VulnerabilityMicrosoft Office Outlook	Critical	6.5	0.9%	RCENetwork	Revised 17 Sep	KB5002923
CVE-2026-69556	Microsoft Office Word Remote Code Execution VulnerabilityMicrosoft Office Word	Important	8.8	0.8%	RCENetwork		KB5002923
CVE-2026-69671	Microsoft Office Word Remote Code Execution VulnerabilityMicrosoft Office Word	Important	8.8	0.8%	RCENetwork	Revised 17 Sep	KB5002923
CVE-2026-69686	Microsoft Office Word Remote Code Execution VulnerabilityMicrosoft Office Word	Important	8.8	0.8%	RCENetwork	Revised 17 Sep	KB5002923
CVE-2026-69722	Microsoft Office Word Remote Code Execution VulnerabilityMicrosoft Office Word	Important	8.8	0.8%	RCENetwork	Revised 17 Sep	KB5002923
CVE-2026-69759	Microsoft Office Word Remote Code Execution VulnerabilityMicrosoft Office Word	Important	8.8	0.8%	RCENetwork	Revised 17 Sep	KB5002923
CVE-2026-69764	Microsoft Office Word Remote Code Execution VulnerabilityMicrosoft Office Word	Important	8.8	0.8%	RCENetwork		KB5002916 KB5002923
CVE-2026-72972	Microsoft Office Word Remote Code Execution VulnerabilityMicrosoft Office Word	Important	8.8	0.8%	RCENetwork	Revised 17 Sep	KB5002923
CVE-2026-72973	Microsoft Office Word Remote Code Execution VulnerabilityMicrosoft Office Word	Important	8.8	0.8%	RCENetwork	Revised 17 Sep	KB5002923
CVE-2026-77901	Microsoft Office Word Remote Code Execution VulnerabilityMicrosoft Office Word	Important	8.8	0.8%	RCENetwork	Revised 21 Sep	KB5002923

Advisories

MSRC guidance without a CVE of its own · 1 advisory

ADV260001

Hardening changes for ReFS volumes on removable mediaStarting with Windows updates released on and after October 13, 2026, Microsoft is making hardening changes to the Resilient File System (ReFS) . This change is not enable by default until 2027. Please see Hardening changes for ReFS volumes on removable media for more information.

Published 13 Oct28 affected products