Unauthenticated information disclosure via out-of-bounds read
Published Jun 9, 2026 · Updated Jun 9, 2026
Out-of-bounds read in Microsoft Office Excel allows remote attackers to disclose information through network-delivered input. Microsoft identifies the flaw as an out-of-bounds read but has not disclosed the affected Excel parser, data structure, or input format that permits reads beyond the intended boundary. The network path requires no authentication or user interaction, and the reported consequence is information disclosure.
Summary
What happened
Out-of-bounds read in Microsoft Office Excel allows remote attackers to disclose information through network-delivered input. Microsoft identifies the flaw as an out-of-bounds read but has not disclosed the affected Excel parser, data structure, or input format that permits reads beyond the intended boundary. The network path requires no authentication or user interaction, and the reported consequence is information disclosure.
The record
- CVE
- CVE-2026-44822
- Published
- Jun 9, 2026
- Updated
- Jun 9, 2026
- Vendor
- Microsoft
- Product
- Microsoft Office LTSC for Mac 2024
- Classifications
- CWE-125
- Attack vector
- network
- 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 is affected?
Published CVSS scores
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Attacks
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Public exploit references
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Technologies
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Your stack
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