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CVE-2026-97776— Microsoft Office Excel 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 Excel 中存在基于堆的缓冲区溢出漏洞，允许未经授权的攻击者通过网络执行代码。

CVSS 8.8 · High EPSS 0.80% · P56

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 7

VendorProduct Version RangeStatus
Microsoft Microsoft 365 Apps for Enterprise 16.0.1< https://aka.ms/OfficeSecurityReleases affected
Microsoft Microsoft Office 365 for Mac 1.0.0< publication affected
Microsoft Microsoft Office LTSC 2021 16.0.1< 16.0.14334.20974 affected
Microsoft Microsoft Office LTSC 2024 16.0.0< 16.0.17932.21056 affected
Microsoft Microsoft Office LTSC for Mac 2021 16.0.1< publication affected
Microsoft Microsoft Office LTSC for Mac 2024 16.0.0< publication affected
Microsoft Office Online Server 16.0.0.0< 16.0.10417.20228 affected
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I. Basic Information for CVE-2026-97776

Vulnerability Information
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Vulnerability Title
Microsoft Office Excel Remote Code Execution Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Heap-based buffer overflow in Microsoft Office Excel 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
堆缓冲区溢出
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Microsoft Microsoft 365 Apps for Enterprise 16.0.1 ~ https://aka.ms/OfficeSecurityReleases -
Microsoft Microsoft Office 365 for Mac 1.0.0 ~ publication -
Microsoft Microsoft Office LTSC 2021 16.0.1 ~ 16.0.14334.20974 -
Microsoft Microsoft Office LTSC 2024 16.0.0 ~ 16.0.17932.21056 -
Microsoft Microsoft Office LTSC for Mac 2021 16.0.1 ~ publication -
Microsoft Microsoft Office LTSC for Mac 2024 16.0.0 ~ publication -
Microsoft Office Online Server 16.0.0.0 ~ 16.0.10417.20228 -

II. Public POCs for CVE-2026-97776

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-97776

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Vendor Advisories for CVE-2026-97776 (1)

Same Patch Batch · Microsoft · 2026-10-13 · 1407 CVEs total

CVE-2026-69634 9.8 CRITICAL Windows iSCSI Remote Code Execution Vulnerability
CVE-2026-70147 9.8 CRITICAL Microsoft PostScript Printer Driver Remote Code Execution Vulnerability
CVE-2026-70153 9.8 CRITICAL Microsoft PostScript Printer Driver Remote Code Execution Vulnerability
CVE-2026-83869 9.8 CRITICAL Windows Domain Name Service Remote Code Execution Vulnerability
CVE-2026-70242 9.8 CRITICAL Microsoft Office Outlook Remote Code Execution Vulnerability
CVE-2026-85806 9.8 CRITICAL Network Policy Server (NPS) Remote Code Execution Vulnerability
CVE-2026-83519 9.8 CRITICAL Windows Error Reporting Remote Code Execution Vulnerability
CVE-2026-105010 9.8 CRITICAL Microsoft Windows Search Component Elevation of Privilege Vulnerability
CVE-2026-102210 9.8 CRITICAL Windows Text Shaping Remote Code Execution Vulnerability
CVE-2026-69705 9.8 CRITICAL Windows iSCSI Remote Code Execution Vulnerability
CVE-2026-88178 9.8 CRITICAL Microsoft Office PowerPoint Remote Code Execution Vulnerability
CVE-2026-88156 9.8 CRITICAL Microsoft Office Outlook Remote Code Execution Vulnerability
CVE-2026-85792 9.8 CRITICAL Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
CVE-2026-96909 9.8 CRITICAL Windows BitLocker Remote Code Execution Vulnerability
CVE-2026-83935 9.8 CRITICAL Microsoft XML Remote Code Execution Vulnerability
CVE-2026-97816 9.8 CRITICAL Microsoft OpenSSH for Windows Remote Code Execution Vulnerability
CVE-2026-96113 9.8 CRITICAL Windows Domain Name Service Remote Code Execution Vulnerability
CVE-2026-96934 9.8 CRITICAL Windows DHCP Server Remote Code Execution Vulnerability
CVE-2026-83770 9.8 CRITICAL Windows Text Shaping Remote Code Execution Vulnerability
CVE-2026-97815 9.8 CRITICAL Windows Error Reporting Remote Code Execution Vulnerability

Showing top 20 of 1407 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Microsoft 365 Apps for Enterprise
Same vendor: Microsoft
Same weakness: CWE-122

V. Comments for CVE-2026-97776

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