CVE-2026-50301

Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

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-2026-50301	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_2016:-::::-::x64:*
	cpe:2.3:a:microsoft:office_2016:-::::-::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:

History

16 Jul 2026, 19:43

Type	Values Removed	Values Added
References	~~() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50301 -~~	() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50301 - Patch, Vendor Advisory
First Time		Microsoft office 2016 Microsoft office 2024 Microsoft 365 Apps Microsoft office 2019 Microsoft Microsoft office 2021
CPE		cpe:2.3:a:microsoft:office_2019:-::::::x64: cpe:2.3:a:microsoft:office_2021:-::::ltsc:-:x64: cpe:2.3:a:microsoft:office_2024:-::::ltsc:-:x64: cpe:2.3:a:microsoft:office_2019:-::::::x86: cpe:2.3:a:microsoft:office_2016:-::::-::x64:* cpe:2.3:a:microsoft:365_apps:-::::enterprise::x86:* cpe:2.3:a:microsoft:office_2016:-::::-::x86:* cpe:2.3:a:microsoft:office_2021:-::::ltsc:-:x86: cpe:2.3:a:microsoft:365_apps:-::::enterprise::x64:* cpe:2.3:a:microsoft:office_2024:-::::ltsc:-:x86:

14 Jul 2026, 18:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-14 18:17

Updated : 2026-07-16 19:43

NVD link : CVE-2026-50301

Mitre link : CVE-2026-50301

CVE.ORG link : CVE-2026-50301

JSON object : View

Products Affected

microsoft

office_2016
365_apps
office_2021
office_2019
office_2024

CWE

CWE-122

Heap-based Buffer Overflow

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