CVE-2026-26144CWE-79

Microsoft Excel Information Disclosure Vulnerability

High · published March 10, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
56.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
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
CVSS v4.0
Not supplied
EPSS
0.00803 · 56.2th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-03-10T17:05Z
EPSS history
Timeline
  • 10 MAR 17:05Z
    Microsoft Excel Information Disclosure Vulnerability
    cvelistv5