8.8High

CVE-2026-100211Microsoft Office Excel Remote Code Execution Vulnerability

Microsoft Microsoft 365 Apps for Enterprise; Microsoft Microsoft Office 365 for Mac; Microsoft Microsoft Office LTSC 2024; Microsoft Microsoft Office LTSC for … Published: 2026-10-13 22:01 (29 days ago)

Description

Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.

Weakness (CWE): CWE-416

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

Vendor	Product	Versions
microsoft	365 apps	16.0.1 – < https://aka.ms/OfficeSecurityReleases
microsoft	microsoft 365	—
Microsoft	Microsoft 365 Apps for Enterprise	16.0.1 – < https://aka.ms/OfficeSecurityReleases
Microsoft	Microsoft Office 365 for Mac	1.0.0 – < 16.114.26101123
Microsoft	Microsoft Office LTSC 2024	16.0.0 – < 16.0.17932.21056
Microsoft	Microsoft Office LTSC for Mac 2021	16.0.1 – < 16.114.26101123
Microsoft	Microsoft Office LTSC for Mac 2024	16.0.0 – < 16.114.26101123
microsoft	office 2021	—
microsoft	office 2024	16.0.0 – < 16.0.17932.21056
microsoft	office 365	1.0.0 – < 16.114.26101123
microsoft	office macos 2021	16.0.1 – < 16.114.26101123
microsoft	office macos 2024	16.0.0 – < 16.114.26101123

References and patches

Microsoft Office Excel Remote Code Execution Vulnerability vendor-advisorypatchVendor Advisory

CPE matches (NVD) (7)

cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x64:*
cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x86:*
cpe:2.3:a:microsoft:microsoft_365:-:*:*:*:*:macos:*:*
cpe:2.3:a:microsoft:office_2021:-:*:*:*:ltsc:macos:-:*
cpe:2.3:a:microsoft:office_2024:-:*:*:*:ltsc:-:x64:*
cpe:2.3:a:microsoft:office_2024:-:*:*:*:ltsc:-:x86:*
cpe:2.3:a:microsoft:office_2024:-:*:*:*:ltsc:macos:-:*

CVSS score

8.8High

Source: microsoft · CVSS 3.1

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: Required
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

All scores (2)

cna	CVSS 3.1	8.8High
secure@microsoft.com	CVSS 3.1	8.8High

EPSS (chance of exploitation in 30 days)

0.93%

higher than 61% of all CVEs

CISA assessment (SSVC)

Exploitation: none
Automatable: no
Technical impact: total

Timeline

ID reserved2026-09-25
Published2026-10-13 22:01
Reached IP-DB2026-10-24 23:26
Last updated2026-11-10 23:45

Assigned by (CNA): microsoft
NVD status: Analyzed

View at source: CVE.org · NVD

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