CVE-2026-83906CWE-303

CVE-2026-83906

Medium · published October 13, 2026

CVSS v3.1
6.5
EPSS
1%
Percentile
59.1
In the wild
Unconfirmed
What it is

Incorrect implementation of authentication algorithm in Windows Shell allows an unauthorized attacker to perform spoofing over a network.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00893 · 59.1th percentile
Weakness
CWE-303 · Incorrect Implementation of Authentication Algorithm
Published
2026-10-13T23:20Z
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83906 · [email protected]
EPSS history
Timeline
  • 15 OCT 03:34Z
    EPSS moved — → 1%
    epss
  • 13 OCT 18:59Z
    Windows Shell Spoofing Vulnerability
    cvelistv5
  • 13 OCT 18:59Z
    Windows Shell Spoofing Vulnerability
    cvelistv5