KB5002904
Security update fixing 30 CVEs
0Windows versions
30CVEs fixed · 6 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
30 Microsoft CVEs · most urgent first| CVE | Vulnerability | Severity | CVSS | EPSS | Impact | Status |
|---|---|---|---|---|---|---|
| CVE-2026-81948 | Microsoft Excel Remote Code Execution VulnerabilityMicrosoft Office Excel | Critical | 7.8 | 0.5% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-81949 | Microsoft Excel Remote Code Execution VulnerabilityMicrosoft Office Excel | Critical | 7.8 | 0.5% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-81950 | Microsoft Excel Remote Code Execution VulnerabilityMicrosoft Office Excel | Critical | 7.8 | 0.5% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-81951 | Microsoft Excel Remote Code Execution VulnerabilityMicrosoft Office Excel | Critical | 7.8 | 0.5% | Remote Code Execution | Revised 24 Sep |
| CVE-2026-81953 | Microsoft Excel Remote Code Execution VulnerabilityMicrosoft Office Excel | Critical | 7.8 | 0.5% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-81959 | Microsoft Excel Remote Code Execution VulnerabilityMicrosoft Office Excel | Critical | 7.8 | 0.5% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-78518 | Microsoft Office Excel Remote Code Execution VulnerabilityMicrosoft Office Excel | Important | 8.8 | 0.9% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-81386 | Microsoft Excel Remote Code Execution VulnerabilityMicrosoft Office Excel | Important | 7.8 | 0.5% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-81388 | Microsoft Excel Remote Code Execution VulnerabilityMicrosoft Office Excel | Important | 7.8 | 0.5% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-81396 | Microsoft Excel Remote Code Execution VulnerabilityMicrosoft Office Excel | Important | 7.8 | 0.5% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-81397 | Microsoft Excel Remote Code Execution VulnerabilityMicrosoft Office Excel | Important | 7.8 | 0.5% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-81398 | Microsoft Excel Remote Code Execution VulnerabilityMicrosoft Office Excel | Important | 7.8 | 0.5% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-81947 | Microsoft Excel Remote Code Execution VulnerabilityMicrosoft Office Excel | Important | 7.8 | 0.5% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-81954 | Microsoft Excel Remote Code Execution VulnerabilityMicrosoft Office Excel | Important | 7.8 | 0.5% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-81956 | Microsoft Excel Remote Code Execution VulnerabilityMicrosoft Office Excel | Important | 7.8 | 0.5% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-81957 | Microsoft Excel Remote Code Execution VulnerabilityMicrosoft Office Excel | Important | 7.8 | 0.5% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-81960 | Microsoft Excel Remote Code Execution VulnerabilityMicrosoft Office Excel | Important | 7.8 | 0.5% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-81389 | Microsoft Excel Remote Code Execution VulnerabilityMicrosoft Office Excel | Important | 7.0 | 0.4% | Remote Code Execution | Revised 17 Sep |
| CVE-2026-81387 | Microsoft Excel Information Disclosure VulnerabilityMicrosoft Office Excel | Important | 5.5 | 0.6% | Information Disclosure | Revised 17 Sep |
| CVE-2026-81390 | Microsoft Excel Information Disclosure VulnerabilityMicrosoft Office Excel | Important | 5.5 | 0.5% | Information Disclosure | Revised 17 Sep |
| CVE-2026-81391 | Microsoft Excel Information Disclosure VulnerabilityMicrosoft Office Excel | Important | 5.5 | 0.5% | Information Disclosure | Revised 17 Sep |
| CVE-2026-81392 | Microsoft Excel Information Disclosure VulnerabilityMicrosoft Office Excel | Important | 5.5 | 0.5% | Information Disclosure | Revised 17 Sep |
| CVE-2026-81393 | Microsoft Excel Information Disclosure VulnerabilityMicrosoft Office Excel | Important | 5.5 | 0.5% | Information Disclosure | Revised 17 Sep |
| CVE-2026-81394 | Microsoft Excel Information Disclosure VulnerabilityMicrosoft Office Excel | Important | 5.5 | 0.6% | Information Disclosure | Revised 17 Sep |
| CVE-2026-81395 | Microsoft Excel Information Disclosure VulnerabilityMicrosoft Office Excel | Important | 5.5 | 0.5% | Information Disclosure | Revised 17 Sep |
| CVE-2026-81399 | Microsoft Excel Information Disclosure VulnerabilityMicrosoft Office Excel | Important | 5.5 | 0.5% | Information Disclosure | Revised 17 Sep |
| CVE-2026-81400 | Microsoft Excel Information Disclosure VulnerabilityMicrosoft Office Excel | Important | 5.5 | 0.5% | Information Disclosure | Revised 17 Sep |
| CVE-2026-81401 | Microsoft Excel Information Disclosure VulnerabilityMicrosoft Office Excel | Important | 5.5 | 0.5% | Information Disclosure | Revised 17 Sep |
| CVE-2026-81958 | Microsoft Excel Information Disclosure VulnerabilityMicrosoft Office Excel | Important | 5.5 | 0.5% | Information Disclosure | Revised 17 Sep |
| CVE-2026-85875 | Microsoft Office Excel Information Disclosure VulnerabilityMicrosoft Office Excel | Important | 5.5 | 0.5% | Information Disclosure | Revised 17 Sep |