CVE-2026-50343CWE-269

Microsoft Install Service Elevation of Privilege Vulnerability

High · published July 14, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
21.3
In the wild
Unconfirmed
What it is

Improper privilege management in Microsoft Install Service allows an authorized attacker to elevate privileges locally.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.00298 · 21.3th percentile
Weakness
CWE-269 · Improper Privilege Management
Published
2026-07-14T17:06Z
EPSS history
Timeline
  • 14 JUL 17:06Z
    Microsoft Install Service Elevation of Privilege Vulnerability
    cvelistv5