CVE-2026-78519
Microsoft Office Outlook Remote Code Execution vulnerability
MSRC advisory September 8, 2026
Alert details
- Source feed
- Microsoft MSRC
- CVE ID
- CVE-2026-78519
- Affected products
- Microsoft Office Outlook Remote Code Execution · Microsoft Microsoft Office Outlook Remote Code Execution · Microsoft
What happened
<p>Use of uninitialized resource in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.</p>
What it means for your business
Microsoft Office Outlook Remote Code Execution vulnerability (CVE-2026-78519) was added to Microsoft’s security update guidance. <p>Use of uninitialized resource in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.</p> If you need help checking exposure, call (864) 335-9223.
EPSS probability
0.82%
Sources
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