Summary
Impact: Elevation of Privilege. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
Is the Preview Pane an attack vector for this vulnerability?
No, the Preview Pane is not an attack vector.
What privileges could be gained by an attacker who successfully exploited this vulnerability?
An attacker who successfully exploited this vulnerability could gain the privileges of the user account or service account running the affected process.
How could an attacker exploit this vulnerability?
An attacker could provide a specially crafted Excel workbook and convince a user to open it for editing, edit a cell, and drag a print-area boundary in Page Break Preview. Successful exploitation could allow the attacker to gain the permissions of the user running Excel. The attacker does not need an account on the affected system.
Security updates
16.115.26110837 — https://learn.microsoft.com/en-us/officeupdates/release-notes-office-for-mac
16.0.10417.20236 — https://support.microsoft.com/help/5002946
16.0.14334.21048 — https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
https — https://learn.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
Vulnerabilities 1
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High 8.8
Microsoft Office Excel Elevation of Privilege Vulnerability
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to elevate privileges over a network.
Revision history
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#1
Information published.
References
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CVE-2026-118725 Microsoft Office Excel Elevation of Privilege Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-118725
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Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
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Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
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Common Vulnerability Scoring System
https://www.first.org/cvss