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CVE-2026-97741

Microsoft Office Excel Remote Code Execution Vulnerability

Microsoft Microsoft 365 Apps for EnterpriseApplications & CMS
Open in ThreatlineRecord JSON
CVSS
8.8High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.78%Chance of exploitation activity in the next 30 days, higher than 55% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in16.114.26101123Fixed versionCVE List
Published13 Oct 2026Updated 23 Oct 2026CVE List

What fixes it

  • 16.114.26101123Microsoft Office 365 for MacCVE List
  • 16.114.26101123Microsoft Office LTSC for Mac 2021CVE List
  • 16.114.26101123Microsoft Office LTSC for Mac 2024CVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Vendor and government advisories 1

Vendors that say their products are affected, and agencies that issued alerts. Check each for the fixed release of the product you run.

Reports 1

1 outlet mention it. Reports are not confirmation; each links to its source.

Description

Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.

Text from CVE List

Affected versions 4

  • Microsoft 365 Apps for Enterpriseaffected: 16.0.1 before https://aka.ms/OfficeSecurityReleasesCVE List
  • Microsoft Office 365 for Macaffected: 1.0.0 before 16.114.26101123CVE List
  • Microsoft Office LTSC for Mac 2021affected: 16.0.1 before 16.114.26101123CVE List
  • Microsoft Office LTSC for Mac 2024affected: 16.0.0 before 16.114.26101123CVE List

References 1