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CVE-2026-26144

HIGH CVSS 3.1: 7.5 EPSS 0.12%
Updated Mar 10, 2026
Microsoft
Parameter Value
CVSS 7.5 (HIGH)
Type CWE-79 (Cross-Site Scripting (XSS))
Vendor Microsoft
Public PoC No

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
None
No data modification
Availability
None
No disruption

CVSS Vector v3.1