CVE-2026-97009

Heap-based buffer overflow in Microsoft Office Excel 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-2026-97009	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_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

14 Oct 2026, 16:48

Type	Values Removed	Values Added
First Time		Microsoft 365 Apps Microsoft Microsoft office 2021 Microsoft office 2024
CPE		cpe:2.3:a:microsoft:365_apps:-::::enterprise::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:365_apps:-::::enterprise::x64:* cpe:2.3:a:microsoft:office_2024:-::::ltsc:-:x86:
References	~~() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97009 -~~	() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97009 - Vendor Advisory

13 Oct 2026, 19:22

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-13 19:22

Updated : 2026-10-14 16:48

NVD link : CVE-2026-97009

Mitre link : CVE-2026-97009

CVE.ORG link : CVE-2026-97009

JSON object : View

Products Affected

microsoft

office_2024
office_2021
365_apps

CWE

CWE-122

Heap-based Buffer Overflow

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