CVE-2026-83646
mediumUrl redirection to untrusted site ('open redirect') in Active Directory Federation Services (AD FS) allows an authorized attacker to perform spoofing over a ne…
Vendor / product: Microsoft — windows 10 1607
Url redirection to untrusted site ('open redirect') in Active Directory Federation Services (AD FS) allows an authorized attacker to perform spoofing over a network.
CVSS
5.4
5.4 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2026-10-13 19:20
Modified: 2026-10-29 18:18
NVD status: Analyzed
Last synced 6 days ago
Verified against the source API 2026-10-30 08:34 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
microsoft / windows_10_1607 <10.0.14393.9612
microsoft / windows_10_1809 <10.0.17763.9376
microsoft / windows_server_2016 <10.0.14393.9612
microsoft / windows_server_2019 <10.0.17763.9376
microsoft / windows_server_2022 <10.0.20348.5761
microsoft / windows_server_2025 <10.0.26100.33650
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83646
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83646 secure@microsoft.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-30 08:34 UTC · record ↗