Local information disclosure via numeric truncation
Published Jul 14, 2026 · Updated Jul 14, 2026
Numeric truncation in Microsoft Word across affected Office and SharePoint releases allows attackers to disclose information locally. Microsoft identifies Word as the affected component but has not published the truncated value, code locus, or conversion that mishandles it. Exploitation requires local access and user interaction; the reported consequence is confidentiality loss without data modification or service interruption.
Summary
What happened
Numeric truncation in Microsoft Word across affected Office and SharePoint releases allows attackers to disclose information locally. Microsoft identifies Word as the affected component but has not published the truncated value, code locus, or conversion that mishandles it. Exploitation requires local access and user interaction; the reported consequence is confidentiality loss without data modification or service interruption.
The record
- CVE
- CVE-2026-55142
- Published
- Jul 14, 2026
- Updated
- Jul 14, 2026
- Vendor
- Microsoft
- Product
- Microsoft Office 2019
- Classifications
- CWE-197, T1204
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 14, 2026CVE publishedPublication date reported by the CVE source.
- Jul 14, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=19.0.0 <https://aka.ms/OfficeSecurityReleases
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
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
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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