CVE-2026-55125CWE-122

CVE-2026-55125

High · published July 14, 2026

CVSS v3.1
7.8
EPSS
1%
Percentile
46.5
In the wild
Unconfirmed
What it is

Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00571 · 46.5th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2026-07-14T22:18Z
Affected products (16)
ProductVersionsFixed in
microsoft/365_appsall versions—
microsoft/365_appsall versions—
microsoft/microsoft_365all versions—
microsoft/office_2016all versions—
microsoft/office_2016all 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/sharepoint_server< 16.0.19725.2043416.0.19725.20434
microsoft/sharepoint_serverall versions—
microsoft/sharepoint_serverall versions—
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55125 · [email protected]
EPSS history
Timeline
  • 14 JUL 17:08Z
    Microsoft Office Remote Code Execution Vulnerability
    cvelistv5