CVE-2026-54988CWE-125

CVE-2026-54988

Medium · published July 14, 2026

CVSS v3.1
6.1
EPSS
0%
Percentile
39.0
In the wild
Unconfirmed
What it is

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.

The record
Technical detail
CVSS v3.1
6.1 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00461 · 39.0th percentile
Weakness
CWE-125 · Out-of-bounds Read
Published
2026-07-14T21:17Z
Affected products (14)
ProductVersionsFixed in
microsoft/365_appsall versions—
microsoft/365_appsall versions—
microsoft/excelall versions—
microsoft/excelall versions—
microsoft/microsoft_365all versions—
microsoft/office_2019all versions—
microsoft/office_2019all versions—
microsoft/office_2021all versions—
microsoft/office_2021all versions—
microsoft/office_2021all versions—
microsoft/office_2024all versions—
microsoft/office_2024all versions—
microsoft/office_2024all versions—
microsoft/office_online_server< 16.0.10417.2017516.0.10417.20175
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54988 · [email protected]
EPSS history
Timeline
  • 14 JUL 17:05Z
    Microsoft Excel Information Disclosure Vulnerability
    cvelistv5