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CVE-2026-26109 - Vulnerability Analysis

HighCVSS: 8.4

Last Updated: March 11, 2026

Microsoft Office Excel - Remote Code Execution

Published: March 10, 2026Updated: March 11, 2026

Overview

Microsoft Office Excel contains an out-of-bounds read vulnerability that allows unauthorized attackers to execute code locally, exploit requires local access.

Severity & Score

Severity: High

CVSS Score: 8.4

Impact

Unauthorized attackers can execute code locally, potentially leading to full system compromise.

Mitigation

Update to the latest version of Microsoft Office Excel.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26109

Related Resources

Vulnerability Intelligence Dashboard
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Details

CVE ID: CVE-2026-26109
Severity: High
CVSS Score: 8.4
Type: out_of_bounds_rw
Status: unconfirmed

CWE

CWE-125

CVSS Metrics

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H