Local information disclosure via uninitialized resource
Published Sep 8, 2026 · Updated Sep 9, 2026
Use of an uninitialized resource in Microsoft Office Excel allows local users to disclose information through required user interaction. Microsoft has not published the affected Excel component, the resource left uninitialized, or how residual contents become exposed. Exploitation requires local execution and user interaction, with disclosure as the only documented consequence.
Summary
What happened
Use of an uninitialized resource in Microsoft Office Excel allows local users to disclose information through required user interaction. Microsoft has not published the affected Excel component, the resource left uninitialized, or how residual contents become exposed. Exploitation requires local execution and user interaction, with disclosure as the only documented consequence.
The record
- CVE
- CVE-2026-81391
- Published
- Sep 8, 2026
- Updated
- Sep 9, 2026
- Vendor
- Microsoft
- Product
- Microsoft Office LTSC for Mac 2024
- Classifications
- CWE-908
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 8, 2026CVE publishedPublication date reported by the CVE source.
- Sep 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
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
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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