5.5
Medium
CVE-2026-55042 Use of uninitialized resource in Microsoft Office allows an unauthorized attacker to disclose information locally
Description
Use of uninitialized resource in Microsoft Office allows an unauthorized attacker to disclose information locally.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Microsoft 365 Apps for Enterprise 16.0 | 16.0.1 → latest | No fix stated |
| Microsoft Office 2016 16.0 | 16.0.0 → < 16.0.5561.1000 | 16.0.5561.1000 |
| Microsoft Office 2019 19.0 | 19.0.0 → latest | No fix stated |
| Microsoft Office 365 for Mac 1.0 | 1.0.0 → < 16.111.26071215 | 16.111.26071215 |
| Microsoft Office LTSC 2021 16.0 | 16.0.1 → latest | No fix stated |
| Microsoft Office LTSC 2024 16.0 | 16.0.0 → latest | No fix stated |
| Microsoft Office LTSC for Mac 2021 16.0 | 16.0.1 → < 16.111.26071215 | 16.111.26071215 |
| Microsoft Office LTSC for Mac 2024 16.0 | 16.0.0 → < 16.111.26071215 | 16.111.26071215 |
References
- Microsoft Office Information Disclosure Vulnerability msrc.microsoft.com
Timeline
- Published
- Last modified
Other CVEs of Microsoft 365 Apps for Enterprise
The 931 CVEs of Microsoft 365 Apps for Enterprise →
CVE-2026-108455
Out-of-bounds read in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information over a network
6.5
Medium
CVE-2026-108454
Buffer over-read in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information over a network
6.5
Medium
CVE-2026-108453
Out-of-bounds read in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information over a network
6.5
Medium
CVE-2026-108450
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network
8.8
High