KB5002916: what it fixes and who gets it
KB5002916 is a security update from Microsoft's September 2026 release for Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition), Microsoft Word 2016 (32-bit edition) and other products.
Microsoft data read
Should you install it?
Yes. It closes holes Microsoft rates Critical, the most serious rating it uses. Windows Update installs it automatically on supported home PCs.
If the installation fails or the PC misbehaves afterwards, note the exact error code first: the fix depends on it. Our update troubleshooting guides are linked on this page.
Security fixes in KB5002916
| CVE | Type | CVSS | Severity |
|---|---|---|---|
| CVE-2026-69285Microsoft Office Remote Code Execution Vulnerability | Remote Code Execution | 8.8 | Critical |
| CVE-2026-78505Microsoft Office Remote Code Execution Vulnerability | Remote Code Execution | 8.8 | Critical |
| CVE-2026-81952Microsoft Word Remote Code Execution Vulnerability | Remote Code Execution | 8.8 | Critical |
| CVE-2026-81955Windows Graphics Component Remote Code Execution Vulnerability | Remote Code Execution | 8.8 | Critical |
| CVE-2026-78510Microsoft Outlook and Word Remote Code Execution Vulnerability | Remote Code Execution | 8.4 | Critical |
| CVE-2026-69442Microsoft Office Remote Code Execution Vulnerability | Remote Code Execution | 8.8 | Important |
| CVE-2026-69764Microsoft Office Word Remote Code Execution Vulnerability | Remote Code Execution | 8.8 | Important |
| CVE-2026-78524Microsoft Office Remote Code Execution Vulnerability | Remote Code Execution | 8.8 | Important |
| CVE-2026-64918Microsoft Office Spoofing Vulnerability | Spoofing | 6.5 | Important |
| CVE-2026-69626Microsoft Office Information Disclosure Vulnerability | Information Disclosure | 6.5 | Important |
| CVE-2026-69734Microsoft Office Word Information Disclosure Vulnerability | Information Disclosure | 6.5 | Important |
| CVE-2026-69739Microsoft Office Information Disclosure Vulnerability | Information Disclosure | 6.5 | Important |
| CVE-2026-72974Microsoft Office Excel Information Disclosure Vulnerability | Information Disclosure | 6.5 | Important |
| CVE-2026-78515Microsoft Office Excel Information Disclosure Vulnerability | Information Disclosure | 6.5 | Important |
| CVE-2026-80087Microsoft Office Information Disclosure Vulnerability | Information Disclosure | 6.5 | Important |
| CVE-2026-80088Microsoft Office Word Information Disclosure Vulnerability | Information Disclosure | 6.5 | Important |
| CVE-2026-80089Microsoft Office Information Disclosure Vulnerability | Information Disclosure | 6.5 | Important |
| CVE-2026-80091Microsoft Office Information Disclosure Vulnerability | Information Disclosure | 6.5 | Important |
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