CVE-2026-77901— Microsoft Office Word Remote Code Execution Vulnerability
Quick assessment
Affected
Microsoft Microsoft 365 Apps for Enterprise
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Microsoft Office Word 中存在空指针解引用漏洞，允许未经授权的攻击者通过网络执行代码。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 8
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Microsoft | Microsoft 365 Apps for Enterprise | 16.0.1< 16.0.20326.20138 |
affected |
| Microsoft | Microsoft Office 2019 | 19.0.0< 16.0.10417.20207 |
affected |
| Microsoft | Microsoft Office 365 for Mac | - |
affected |
| Microsoft | Microsoft Office LTSC 2021 | 16.0.1< 16.0.14334.20906 |
affected |
| Microsoft | Microsoft Office LTSC 2024 | 16.0.0< 16.0.17932.20976 |
affected |
| Microsoft | Microsoft Office LTSC for Mac 2021 | - |
affected |
| Microsoft | Microsoft Office LTSC for Mac 2024 | - |
affected |
| Microsoft | Microsoft Word 2016 | 16.0.1< 16.0.5569.1000 |
affected |
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I. Basic Information for CVE-2026-77901
Vulnerability Information
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Vulnerability Title
Microsoft Office Word Remote Code Execution Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Null pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Microsoft | Microsoft 365 Apps for Enterprise | 16.0.1 ~ 16.0.20326.20138 | - |
|
| Microsoft | Microsoft Office 2019 | 19.0.0 ~ 16.0.10417.20207 | - |
|
| Microsoft | Microsoft Office 365 for Mac | - | - |
|
| Microsoft | Microsoft Office LTSC 2021 | 16.0.1 ~ 16.0.14334.20906 | - |
|
| Microsoft | Microsoft Office LTSC 2024 | 16.0.0 ~ 16.0.17932.20976 | - |
|
| Microsoft | Microsoft Office LTSC for Mac 2021 | - | - |
|
| Microsoft | Microsoft Office LTSC for Mac 2024 | - | - |
|
| Microsoft | Microsoft Word 2016 | 16.0.1 ~ 16.0.5569.1000 | - |
|
II. Public POCs for CVE-2026-77901
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-77901 (1)
Same Patch Batch · Microsoft · 2026-09-08 · 966 CVEs total
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| CVE-2026-69715 | 9.8 CRITICAL | Windows Direct Show Remote Code Execution Vulnerability |
| CVE-2026-73009 | 9.8 CRITICAL | Windows Secure Socket Tunneling Protocol (SSTP) Remote Code Execution Vulnerability |
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| CVE-2026-69768 | 9.8 CRITICAL | Windows RNDIS Remote Code Execution Vulnerability |
| CVE-2026-69491 | 9.8 CRITICAL | Microsoft DirectMusic Remote Code Execution Vulnerability |
| CVE-2026-69431 | 9.8 CRITICAL | Telnet Client Remote Code Execution Vulnerability |
| CVE-2026-72979 | 9.8 CRITICAL | Windows DHCP Server Remote Code Execution Vulnerability |
| CVE-2026-69824 | 9.8 CRITICAL | Microsoft Standard XPS Remote Code Execution Vulnerability |
| CVE-2026-69408 | 9.8 CRITICAL | Microsoft Windows Media Foundation Remote Code Execution Vulnerability |
| CVE-2026-69910 | 9.8 CRITICAL | Windows Hyper-V Remote Code Execution Vulnerability |
| CVE-2026-78510 | 9.8 CRITICAL | Microsoft Word Remote Code Execution Vulnerability |
Showing top 20 of 966 CVEs. View all on vendor page → →
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V. Comments for CVE-2026-77901
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