CVE-2026-83646

MEDIUMCVSS 4.8

Description

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

Timeline

Published:October 13th, 2026 7:20 PM

Last modified:October 29th, 2026 6:18 PM

CVSS Scoring

CVSS v3: 4.8 (MEDIUM)

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Affected Software

From NVD CPE configuration data

Vendors

microsoft

Products

windows_10_1607windows_10_1809windows_server_2016windows_server_2019windows_server_2022windows_server_2025

Weaknesses (CWE)

CWE-601

References & Reports

Advisories, patches, and third-party reports

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83646Vendor Advisory

Source: NIST NVD · Data may lag official sources by up to one minute