CVE-2026-78439— Microsoft Office Graphics Component Remote Code Execution Vulnerability
Quick assessment
Affected
Microsoft Microsoft Office 365 for Mac
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 Graphics Component是美国Microsoft公司的一款处理图形渲染与显示相关功能的系统组件。 Microsoft Graphics Component存在缓冲区错误漏洞，该漏洞源于Microsoft Graphics组件的栈缓冲区溢出，可能导致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 4
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Microsoft | Microsoft Office 365 for Mac | 1.0.0< 16.113.26091433 |
affected |
| Microsoft | Microsoft Office for Android | 16.0.1< 16.0.20430.20000 |
affected |
| Microsoft | Microsoft Office LTSC for Mac 2021 | 16.0.1< 16.113.26091433 |
affected |
| Microsoft | Microsoft Office LTSC for Mac 2024 | 16.0.0< 16.113.26091433 |
affected |
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I. Basic Information for CVE-2026-78439
Vulnerability Information
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Vulnerability Title
Microsoft Office Graphics Component Remote Code Execution Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Stack-based buffer overflow in Microsoft Graphics Component 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
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Graphics Component 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Graphics Component是美国Microsoft公司的一款处理图形渲染与显示相关功能的系统组件。 Microsoft Graphics Component存在缓冲区错误漏洞，该漏洞源于Microsoft Graphics组件的栈缓冲区溢出，可能导致未经授权的攻击者通过网络执行代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Microsoft | Microsoft Office 365 for Mac | 1.0.0 ~ 16.113.26091433 | - |
|
| Microsoft | Microsoft Office for Android | 16.0.1 ~ 16.0.20430.20000 | - |
|
| Microsoft | Microsoft Office LTSC for Mac 2021 | 16.0.1 ~ 16.113.26091433 | - |
|
| Microsoft | Microsoft Office LTSC for Mac 2024 | 16.0.0 ~ 16.113.26091433 | - |
|
II. Public POCs for CVE-2026-78439
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-78439 (1)
Same Patch Batch · Microsoft · 2026-09-08 · 966 CVEs total
| CVE-2026-83941 | 9.9 CRITICAL | Entra ID Elevation of Privilege Vulnerability |
| CVE-2026-78510 | 9.8 CRITICAL | Microsoft Word Remote Code Execution Vulnerability |
| CVE-2026-69769 | 9.8 CRITICAL | Windows HTTP Print Provider Remote Code Execution Vulnerability |
| CVE-2026-72983 | 9.8 CRITICAL | Internet Connection Sharing (ICS) Remote Code Execution Vulnerability |
| CVE-2026-72982 | 9.8 CRITICAL | Windows Netlogon Remote Code Execution Vulnerability |
| CVE-2026-69579 | 9.8 CRITICAL | Windows Message Queuing Remote Code Execution Vulnerability |
| CVE-2026-69276 | 9.8 CRITICAL | Microsoft UxTheme Library (uxtheme.dll) Remote Code Execution Vulnerability |
| CVE-2026-69819 | 9.8 CRITICAL | RPC Runtime Library Remote Code Execution Vulnerability |
| CVE-2026-77493 | 9.8 CRITICAL | Windows Graphics Component Remote Code Execution Vulnerability |
| CVE-2026-70296 | 9.8 CRITICAL | Windows Imaging Component Remote Code Execution Vulnerability |
| CVE-2026-69590 | 9.8 CRITICAL | Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability |
| CVE-2026-69463 | 9.8 CRITICAL | Windows NTFS Remote Code Execution Vulnerability |
| CVE-2026-69431 | 9.8 CRITICAL | Telnet Client Remote Code Execution Vulnerability |
| CVE-2026-69491 | 9.8 CRITICAL | Microsoft DirectMusic Remote Code Execution Vulnerability |
| CVE-2026-69910 | 9.8 CRITICAL | Windows Hyper-V Remote Code Execution Vulnerability |
| CVE-2026-67643 | 9.8 CRITICAL | Microsoft SQL Server Remote Code Execution Vulnerability |
| CVE-2026-78509 | 9.8 CRITICAL | Microsoft Office Outlook Remote Code Execution Vulnerability |
| CVE-2026-69586 | 9.8 CRITICAL | Microsoft Windows PDF Remote Code Execution Vulnerability |
| CVE-2026-69496 | 9.8 CRITICAL | Windows Compressed Folder Remote Code Execution Vulnerability |
| CVE-2026-69525 | 9.8 CRITICAL | Remote Desktop Services Remote Code Execution Vulnerability |
Showing top 20 of 966 CVEs. View all on vendor page → →
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V. Comments for CVE-2026-78439
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