Code execution via untrusted pointer dereference
Published Jun 9, 2026 · Updated Jun 9, 2026
Untrusted pointer dereference in Microsoft Office Word allows attackers to execute code after a user opens malicious content. The public record states that Word dereferences a pointer derived from untrusted input, but Microsoft has not disclosed the responsible parser, function, or pointer-lifetime error. Exploitation requires user interaction and executes code in that user's context, permitting access to data and interruption of affected applications.
Summary
What happened
Untrusted pointer dereference in Microsoft Office Word allows attackers to execute code after a user opens malicious content. The public record states that Word dereferences a pointer derived from untrusted input, but Microsoft has not disclosed the responsible parser, function, or pointer-lifetime error. Exploitation requires user interaction and executes code in that user's context, permitting access to data and interruption of affected applications.
The record
- CVE
- CVE-2026-45643
- Published
- Jun 9, 2026
- Updated
- Jun 9, 2026
- Vendor
- Microsoft
- Product
- Microsoft Office LTSC for Mac 2024
- Classifications
- CWE-822, T1204.002
- 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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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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