High severity8.8NVD Advisory· Published Sep 8, 2026· Updated Sep 9, 2026

CVE-2026-78519

Description

Use of uninitialized resource in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.

Microsoft/365 Apps2 versions
cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x64:*+ 1 more
- cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x64:*
- cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x86:*
Microsoft/Office6 versions
cpe:2.3:a:microsoft:office_2019:-:*:*:*:*:*:x64:*+ 5 more
- cpe:2.3:a:microsoft:office_2019:-:*:*:*:*:*:x64:*
- cpe:2.3:a:microsoft:office_2019:-:*:*:*:*:*:x86:*
- cpe:2.3:a:microsoft:office_2021:-:*:*:*:ltsc:-:x64:*
- cpe:2.3:a:microsoft:office_2021:-:*:*:*:ltsc:-:x86:*
- cpe:2.3:a:microsoft:office_2024:-:*:*:*:ltsc:-:x64:*
- cpe:2.3:a:microsoft:office_2024:-:*:*:*:ltsc:-:x86:*
Microsoft/Outlook2 versions
cpe:2.3:a:microsoft:outlook:2016:*:*:*:*:*:x64:*+ 1 more
- cpe:2.3:a:microsoft:outlook:2016:*:*:*:*:*:x64:*
- cpe:2.3:a:microsoft:outlook:2016:*:*:*:*:*:x86:*
Microsoft/Office Outlookllm-fuzzy