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CVE-2026-26112

HIGH CVSS 3.1: 7.8 EPSS 0.03%
Updated Mar 13, 2026
Microsoft
Parameter Value
CVSS 7.8 (HIGH)
Affected Versions before 16.0.10417.20102
Fixed In 16.0.10417.20102
Type CWE-822
Vendor Microsoft
Public PoC No

Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
Required
User action required

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Weakness Type (CWE)

Vulnerable Products 13

Configuration From (including) Up to (excluding)
Microsoft 365_Apps
cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x64:*
Microsoft 365_Apps
cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x86:*
Microsoft Excel
cpe:2.3:a:microsoft:excel:2016:*:*:*:*:*:x64:*
Microsoft Excel
cpe:2.3:a:microsoft:excel:2016:*:*:*:*:*:x86:*
Microsoft Office
cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:x64:*
Microsoft Office
cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:x86:*
Microsoft Office_Long_Term_Servicing_Channel
cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:-:x64:*
Microsoft Office_Long_Term_Servicing_Channel
cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:-:x86:*
Microsoft Office_Long_Term_Servicing_Channel
cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:macos:*:*
Microsoft Office_Long_Term_Servicing_Channel
cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:-:x64:*
Microsoft Office_Long_Term_Servicing_Channel
cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:-:x86:*
Microsoft Office_Long_Term_Servicing_Channel
cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:macos:*:*
Microsoft Office_Online_Server
cpe:2.3:a:microsoft:office_online_server:*:*:*:*:*:*:*:*
16.0.10417.20102