Local information disclosure via out-of-bounds read
Published Sep 8, 2026 · Updated Sep 10, 2026
Out-of-bounds read in Microsoft Office Excel allows local users to disclose information after required user interaction. Microsoft identifies Excel as the affected component but has not disclosed the parser, data structure, or bounds error that performs the invalid read. Successful exploitation exposes process-accessible memory; no integrity or availability impact is reported, and another user must initiate the triggering interaction.
Summary
What happened
Out-of-bounds read in Microsoft Office Excel allows local users to disclose information after required user interaction. Microsoft identifies Excel as the affected component but has not disclosed the parser, data structure, or bounds error that performs the invalid read. Successful exploitation exposes process-accessible memory; no integrity or availability impact is reported, and another user must initiate the triggering interaction.
The record
- CVE
- CVE-2026-81395
- Published
- Sep 8, 2026
- Updated
- Sep 10, 2026
- Vendor
- Microsoft
- Product
- Microsoft Office LTSC for Mac 2024
- Classifications
- CWE-125
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 8, 2026CVE publishedPublication date reported by the CVE source.
- Sep 10, 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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Weakness, pattern, technique
Public exploit references
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Technologies
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Your stack
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