CVE-2026-97740CWE-497

CVE-2026-97740

Medium · published October 13, 2026

CVSS v3.1
6.5
EPSS
1%
Percentile
57.3
In the wild
Unconfirmed
What it is

Exposure of sensitive system information to an unauthorized control sphere in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00835 · 57.3th percentile
Weakness
CWE-497 · Exposure of Sensitive System Information to an Unauthorized Control Sphere
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-2026-97740 · [email protected]
EPSS history
Timeline
  • 15 OCT 03:35Z
    EPSS moved — → 1%
    epss
  • 13 OCT 19:00Z
    Microsoft Office Excel Information Disclosure Vulnerability
    cvelistv5
  • 13 OCT 19:00Z
    Microsoft Office Excel Information Disclosure Vulnerability
    cvelistv5