CVE-2026-83499CWE-1220

CVE-2026-83499

High · published October 13, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
22.0
In the wild
Unconfirmed
What it is

Insufficient granularity of access control in Windows Server Update 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
CVSS v4.0
Not supplied
EPSS
0.00304 · 22.0th percentile
Weakness
CWE-1220 · Insufficient Granularity of Access Control
Published
2026-10-13T23:19Z
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83499 · [email protected]
EPSS history
Timeline
  • 15 OCT 03:34Z
    EPSS moved — → 0%
    epss
  • 13 OCT 18:59Z
    Windows Server Update Service Elevation of Privilege Vulnerability
    cvelistv5
  • 13 OCT 18:59Z
    Windows Server Update Service Elevation of Privilege Vulnerability
    cvelistv5