KB5002923
Security update fixing 31 CVEs
0Windows versions
31CVEs fixed · 3 critical
0Exploited or in CISA KEV
0Open known issues affecting it
—Restart required (per MSRC)
Known issues in this update
Windows release healthNo known issues listed
Windows release health lists no issues from this KB or the update it builds on.
Issues this update resolves
No resolved issues listed
Windows release health names no issues fixed by this KB.
Security fixes
31 Microsoft CVEs · most urgent first| CVE | Vulnerability | Severity | CVSS | EPSS | Impact | Status |
|---|---|---|---|---|---|---|
| CVE-2026-78509 | Microsoft Office Outlook Remote Code Execution VulnerabilityMicrosoft Office Outlook | Critical | 9.8 | 1.0% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-78525 | Microsoft Office Outlook Remote Code Execution VulnerabilityMicrosoft Office Outlook | Critical | 8.8 | 0.8% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-78520 | Microsoft Office Outlook Information Disclosure VulnerabilityMicrosoft Office Outlook | Critical | 6.5 | 0.9% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-69556 | Microsoft Office Word Remote Code Execution VulnerabilityMicrosoft Office Word | Important | 8.8 | 0.8% | Remote Code Execution | |
| CVE-2026-69671 | Microsoft Office Word Remote Code Execution VulnerabilityMicrosoft Office Word | Important | 8.8 | 0.8% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-69686 | Microsoft Office Word Remote Code Execution VulnerabilityMicrosoft Office Word | Important | 8.8 | 0.8% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-69722 | Microsoft Office Word Remote Code Execution VulnerabilityMicrosoft Office Word | Important | 8.8 | 0.8% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-69759 | Microsoft Office Word Remote Code Execution VulnerabilityMicrosoft Office Word | Important | 8.8 | 0.8% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-69764 | Microsoft Office Word Remote Code Execution VulnerabilityMicrosoft Office Word | Important | 8.8 | 0.8% | Remote Code Execution | |
| CVE-2026-72972 | Microsoft Office Word Remote Code Execution VulnerabilityMicrosoft Office Word | Important | 8.8 | 0.8% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-72973 | Microsoft Office Word Remote Code Execution VulnerabilityMicrosoft Office Word | Important | 8.8 | 0.8% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-77901 | Microsoft Office Word Remote Code Execution VulnerabilityMicrosoft Office Word | Important | 8.8 | 0.8% | Remote Code Execution | Revised 21 Sep |
| CVE-2026-78504 | Microsoft Office Word Remote Code Execution VulnerabilityMicrosoft Office Word | Important | 8.8 | 0.8% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-78511 | Microsoft Office Word Remote Code Execution VulnerabilityMicrosoft Office Word | Important | 8.8 | 0.8% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-78514 | Microsoft Office Word Remote Code Execution VulnerabilityMicrosoft Office Word | Important | 8.8 | 0.8% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-78517 | Microsoft Office Word Remote Code Execution VulnerabilityMicrosoft Office Word | Important | 8.8 | 0.8% | Remote Code Execution | Revised 21 Sep |
| CVE-2026-78521 | Microsoft Office Word Remote Code Execution VulnerabilityMicrosoft Office Word | Important | 8.8 | 0.8% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-80080 | Microsoft Office Word Remote Code Execution VulnerabilityMicrosoft Office Word | Important | 8.8 | 0.8% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-80085 | Microsoft Office Word Remote Code Execution VulnerabilityMicrosoft Office Word | Important | 8.8 | 0.8% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-62804 | Microsoft Word Remote Code Execution VulnerabilityMicrosoft Office Word | Important | 7.8 | 0.6% | Remote Code Execution | |
| CVE-2026-69719 | Microsoft Office Word Information Disclosure VulnerabilityMicrosoft Office Word | Important | 6.5 | 0.9% | Information Disclosure | Revised 17 Sep |
| CVE-2026-77911 | Microsoft Office Word Information Disclosure VulnerabilityMicrosoft Office Word | Important | 6.5 | 0.9% | Information Disclosure | |
| CVE-2026-78502 | Microsoft Office Word Information Disclosure VulnerabilityMicrosoft Office Word | Important | 6.5 | 0.9% | Information Disclosure | Revised 17 Sep |
| CVE-2026-78503 | Microsoft Office Word Information Disclosure VulnerabilityMicrosoft Office Word | Important | 6.5 | 0.9% | Information Disclosure | Revised 17 Sep |
| CVE-2026-78522 | Microsoft Office Word Information Disclosure VulnerabilityMicrosoft Office Word | Important | 6.5 | 0.9% | Information Disclosure | |
| CVE-2026-80079 | Microsoft Office Word Information Disclosure VulnerabilityMicrosoft Office Word | Important | 6.5 | 0.9% | Information Disclosure | |
| CVE-2026-80090 | Microsoft Office Word Information Disclosure VulnerabilityMicrosoft Office Word | Important | 6.5 | 0.9% | Information Disclosure | Revised 17 Sep |
| CVE-2026-78506 | Microsoft Office Word Information Disclosure VulnerabilityMicrosoft Office Word | Important | 5.5 | 0.5% | Information Disclosure | Revised 17 Sep |
| CVE-2026-83949 | Microsoft Office Word Information Disclosure VulnerabilityMicrosoft Office Word | Important | 5.5 | 0.5% | Information Disclosure | |
| CVE-2026-83951 | Microsoft Office Word Information Disclosure VulnerabilityMicrosoft Office Word | Important | 5.5 | 0.5% | Information Disclosure | |
| CVE-2026-72976 | Microsoft Office Word Information Disclosure VulnerabilityMicrosoft Office Word | Important | 5.0 | 0.5% | Information Disclosure | Revised 17 Sep |