CVE-2026-97754CWE-122

CVE-2026-97754

High · published October 13, 2026

CVSS v3.1
8.8
EPSS
1%
Percentile
53.4
In the wild
Unconfirmed
What it is

Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00722 · 53.4th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2026-10-13T23:22Z
Affected products (10)
ProductVersionsFixed in
microsoft/365_appsall versions—
microsoft/365_appsall versions—
microsoft/microsoft_365all 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< 16.0.10417.2022816.0.10417.20228
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97754 · [email protected]
EPSS history
Timeline
  • 15 OCT 03:35Z
    EPSS moved — → 1%
    epss
  • 13 OCT 19:00Z
    Microsoft Office Excel Remote Code Execution Vulnerability
    cvelistv5
  • 13 OCT 19:00Z
    Microsoft Office Excel Remote Code Execution Vulnerability
    cvelistv5