CVE-2026-100208CWE-190

CVE-2026-100208

High · published September 26, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
26.3
In the wild
Unconfirmed
What it is

Integer overflow or wraparound in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00340 · 26.3th percentile
Weakness
CWE-190 · Integer Overflow or Wraparound
Published
2026-09-26T00:17Z
Affected products (6)
ProductVersionsFixed in
microsoft/365_appsall versions—
microsoft/365_appsall versions—
microsoft/office_2021all versions—
microsoft/office_2021all versions—
microsoft/office_2024all versions—
microsoft/office_2024all versions—
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-100208 · [email protected]
EPSS history
Timeline
  • 27 SEP 03:24Z
    EPSS moved — → 0%
    epss
  • 25 SEP 19:39Z
    Microsoft Office Outlook Remote Code Execution Vulnerability
    cvelistv5