CVE-2026-83657CWE-1390

CVE-2026-83657

Medium · published October 13, 2026

CVSS v3.1
5.5
EPSS
0%
Percentile
12.1
In the wild
Unconfirmed
What it is

Weak authentication in Windows Modern Device Management (MDM) allows an authorized attacker to perform tampering locally.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00222 · 12.1th percentile
Weakness
CWE-1390 · Weak Authentication
Published
2026-10-13T23:20Z
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83657 · [email protected]
EPSS history
Timeline
  • 15 OCT 03:34Z
    EPSS moved — → 0%
    epss
  • 13 OCT 18:59Z
    Windows Modern Device Management (MDM) Tampering Vulnerability
    cvelistv5
  • 13 OCT 18:59Z
    Windows Modern Device Management (MDM) Tampering Vulnerability
    cvelistv5