CVE-2026-78519

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

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78519	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:microsoft:365_apps:-::::enterprise::x64:*
	cpe:2.3:a:microsoft:365_apps:-::::enterprise::x86:*
	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:
	cpe:2.3:a:microsoft:outlook:2016::::::x64:
	cpe:2.3:a:microsoft:outlook:2016::::::x86:

History

No history.

Information

Published : 2026-09-08 18:20

Updated : 2026-09-09 18:58

NVD link : CVE-2026-78519

Mitre link : CVE-2026-78519

CVE.ORG link : CVE-2026-78519

JSON object : View

Products Affected

microsoft

office_2024
office_2019
outlook
365_apps
office_2021

CWE

CWE-908

Use of Uninitialized Resource

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