Summary
Impact: Remote Code Execution. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?
Successful exploitation depends on specific memory conditions in the affected application that the attacker cannot fully control. These conditions can make exploitation unreliable.
Is the Preview Pane an attack vector for this vulnerability?
No, the Preview Pane is not an attack vector.
Security updates
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
16.115.26110837 — https://learn.microsoft.com/en-us/officeupdates/release-notes-office-for-mac
Vulnerabilities 1
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High 7.5
Microsoft Office Word Remote Code Execution Vulnerability
Use after free in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
Revision history
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#1
Information published.
References
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CVE-2026-110052 Microsoft Office Word Remote Code Execution Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-110052
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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