Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-55024— Microsoft Excel Remote Code Execution Vulnerability

CVSS 7.8 · High EPSS 0.39% · P32

Possible ATT&CK Techniques 1AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 9

VendorProductVersion RangeStatus
MicrosoftMicrosoft 365 Apps for Enterprise16.0.1< https://aka.ms/OfficeSecurityReleasesaffected
MicrosoftMicrosoft Excel 201616.0.0.0< 16.0.5561.1001affected
MicrosoftMicrosoft Office 201919.0.0< https://aka.ms/OfficeSecurityReleasesaffected
MicrosoftMicrosoft Office 365 for Mac1.0.0< 16.111.26071215affected
MicrosoftMicrosoft Office LTSC 202116.0.1< https://aka.ms/OfficeSecurityReleasesaffected
MicrosoftMicrosoft Office LTSC 202416.0.0< https://aka.ms/OfficeSecurityReleasesaffected
MicrosoftMicrosoft Office LTSC for Mac 202116.0.1< 16.111.26071215affected
MicrosoftMicrosoft Office LTSC for Mac 202416.0.0< 16.111.26071215affected
MicrosoftOffice Online Server16.0.0.0< 16.0.10417.20175affected
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2026-55024

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Microsoft Excel Remote Code Execution Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
使用不兼容类型访问资源(类型混淆)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Microsoft Office Excel 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Office Excel是美国Microsoft公司的一款电子表格软件。 Microsoft Office Excel 存在缓冲区错误漏洞，该漏洞源于类型混淆，可能导致未经授权的攻击者本地执行代码。以下产品及版本受到影响：Microsoft 365 Apps for Enterprise、Microsoft Excel 2016 16.0.0.0之前版本、Microsoft Office 2019、Microsoft Office 365 for Mac、Microsoft Offic
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

VendorProductAffected VersionsCPESubscribe
MicrosoftMicrosoft 365 Apps for Enterprise 16.0.1 ~ https://aka.ms/OfficeSecurityReleases -
MicrosoftMicrosoft Excel 2016 16.0.0.0 ~ 16.0.5561.1001 -
MicrosoftMicrosoft Office 2019 19.0.0 ~ https://aka.ms/OfficeSecurityReleases -
MicrosoftMicrosoft Office 365 for Mac 1.0.0 ~ 16.111.26071215 -
MicrosoftMicrosoft Office LTSC 2021 16.0.1 ~ https://aka.ms/OfficeSecurityReleases -
MicrosoftMicrosoft Office LTSC 2024 16.0.0 ~ https://aka.ms/OfficeSecurityReleases -
MicrosoftMicrosoft Office LTSC for Mac 2021 16.0.1 ~ 16.111.26071215 -
MicrosoftMicrosoft Office LTSC for Mac 2024 16.0.0 ~ 16.111.26071215 -
MicrosoftOffice Online Server 16.0.0.0 ~ 16.0.10417.20175 -

II. Public POCs for CVE-2026-55024

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-55024

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-55024 (1)

Same Patch Batch · Microsoft · 2026-07-14 · 570 CVEs total

CVE-2026-570929.9 CRITICALMicrosoft Windows VMSwitch Elevation of Privilege Vulnerability
CVE-2026-561599.8 CRITICALDHCP Server Service Remote Code Execution Vulnerability
CVE-2026-505189.8 CRITICALWindows DHCP Server Remote Code Execution Vulnerability
CVE-2026-559449.8 CRITICALMicrosoft Dynamics NAV and Microsoft Dynamics 365 Business Central (On Premises) Remote Co
CVE-2026-561909.8 CRITICALRemote Desktop Protocol Remote Code Execution Vulnerability
CVE-2026-429909.8 CRITICALSQL Server ODBC driver Elevation of Privilege Vulnerability
CVE-2026-549909.8 CRITICALRemote Desktop Client Remote Code Execution Vulnerability
CVE-2026-561889.8 CRITICALWindows Server Network driver Remote Code Execution Vulnerability
CVE-2026-505229.8 CRITICALMicrosoft SharePoint Remote Code Execution Vulnerability
CVE-2026-586449.8 CRITICALMicrosoft SharePoint Remote Code Execution Vulnerability
CVE-2026-491729.8 CRITICALWindows FTP Service Remote Code Execution Vulnerability
CVE-2026-504479.8 CRITICALWindows Message Queuing Service (MSMQ) Remote Code Execution Vulnerability
CVE-2026-550109.8 CRITICALMinecraft Bedrock Dedicated Server Remote Code Execution Vulnerability
CVE-2026-485619.6 CRITICALMicrosoft Copilot Remote Code Execution Vulnerability
CVE-2026-503809.6 CRITICALWindows GDI+ Remote Code Execution Vulnerability
CVE-2026-550089.6 CRITICALMicrosoft Exchange Server Spoofing Vulnerability
CVE-2026-497989.3 CRITICALWindows Kernel Elevation of Privilege Vulnerability
CVE-2026-550409.1 CRITICALMicrosoft SharePoint Server Security Feature Bypass Vulnerability
CVE-2026-476328.8 HIGHAzure Monitor Agent Metrics Extension Elevation of Privilege Vulnerability
CVE-2026-485648.8 HIGHDHCP Server Service Remote Code Execution Vulnerability

Showing top 20 of 570 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Microsoft 365 Apps for Enterprise
Same vendor: Microsoft
Same weakness: CWE-843

V. Comments for CVE-2026-55024

No comments yet

Leave a comment