CVE-2026-55142
Microsoft Word Information Disclosure Vulnerability
Numeric truncation error in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Microsoft Word Information Disclosure Vulnerability
Numeric truncation error in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
- Record
CVE-2026-55142- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C - Weakness
- CWE-197
- Updated
- 2026-11-02
EUVDEUVD-2026-44212
Numeric truncation error in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
- Record
EUVD-2026-44212- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-vm6w-v59c-562f
Numeric truncation error in Microsoft Office Word allows an unauthorized attacker to disclose...
Numeric truncation error in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
- Record
GHSA-vm6w-v59c-562f- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N - Weakness
- CWE-197
- Updated
- 2026-11-02
NVD
Numeric truncation error in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
- Record
CVE-2026-55142- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N - Weakness
- CWE-197
- Updated
- 2026-11-02
Affected products
- microsoft word
- microsoft 365 apps
- microsoft 365 apps for enterprise
- microsoft office 2019
- microsoft office 365 for mac
- microsoft office ltsc 2021
- microsoft office ltsc 2024
- microsoft sharepoint enterprise server 2016
- microsoft sharepoint server 2019
- microsoft sharepoint server subscription edition
- microsoft word 2016
- microsoft 365
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History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-55142 is a medium vulnerability (CVSS 5.5) in Microsoft Word, published July 14, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.60%, the 48th percentile. No source names a fixed version.