CVE-2026-83646CWE-601

CVE-2026-83646

Medium · published October 13, 2026

CVSS v3.1
4.8
EPSS
0%
Percentile
29.5
In the wild
Unconfirmed
What it is

Url redirection to untrusted site ('open redirect') in Active Directory Federation Services (AD FS) allows an authorized attacker to perform spoofing over a network.

The record
Technical detail
CVSS v3.1
4.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00368 · 29.5th percentile
Weakness
CWE-601 · URL Redirection to Untrusted Site ('Open Redirect')
Published
2026-10-13T23:20Z
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83646 · [email protected]
EPSS history
Timeline
  • 15 OCT 03:34Z
    EPSS moved — → 0%
    epss
  • 13 OCT 18:59Z
    Active Directory Federation Services (AD FS) Spoofing Vulnerability
    cvelistv5
  • 13 OCT 18:59Z
    Active Directory Federation Services (AD FS) Spoofing Vulnerability
    cvelistv5