Local code execution via use-after-free
Published Jun 9, 2026 · Updated Jun 9, 2026
Use-after-free in Microsoft Office allows local users to execute arbitrary code through the Excel component on affected devices. The public record identifies Excel but does not disclose the freed object, lifetime error, or stale-memory operation that attacker-controlled input reaches. Exploitation requires local access but no prior privileges or user interaction, and successful execution runs code in the Office process context.
Summary
What happened
Use-after-free in Microsoft Office allows local users to execute arbitrary code through the Excel component on affected devices. The public record identifies Excel but does not disclose the freed object, lifetime error, or stale-memory operation that attacker-controlled input reaches. Exploitation requires local access but no prior privileges or user interaction, and successful execution runs code in the Office process context.
The record
- CVE
- CVE-2026-45474
- Published
- Jun 9, 2026
- Updated
- Jun 9, 2026
- Vendor
- Microsoft
- Product
- Microsoft Office LTSC for Mac 2024
- Classifications
- CWE-416, T1203
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 9, 2026CVE publishedPublication date reported by the CVE source.
- Jun 9, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=-
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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