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HIGHCVE-2026-26144Published Modified CNA microsoft

CVE-2026-26144: Microsoft Excel Information Disclosure Vulnerability

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.

Metrics

CVSS v3.1
7.5
Severity
HIGH
Fixed in
https://aka.ms/OfficeSecurityReleases
Affected Products
1

Fix available

https://aka.ms/OfficeSecurityReleases
Patch commits
Affected packages
  • Microsoft / Microsoft 365 Apps for Enterprise
    < https://aka.ms/OfficeSecurityReleases (from 16.0.1)
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
References