CVE-2026-105009CWE-276

CVE-2026-105009

High · published October 13, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
20.2
In the wild
Unconfirmed
What it is

Incorrect default permissions in Windows Server Update Service allows an authorized attacker to elevate privileges locally.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00288 · 20.2th percentile
Weakness
CWE-276 · Incorrect Default Permissions
Published
2026-10-13T23:17Z
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-105009 · [email protected]
EPSS history
Timeline
  • 15 OCT 03:28Z
    EPSS moved — → 0%
    epss
  • 13 OCT 19:01Z
    Windows Server Update Service Elevation of Privilege Vulnerability
    cvelistv5
  • 13 OCT 19:01Z
    Windows Server Update Service Elevation of Privilege Vulnerability
    cvelistv5