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Active Directory Federation Services (AD FS) Spoofing Vulnerability

🗓️ 13 Oct 2026 14:00:00Reported by MicrosoftType 
mscve
 mscve
🔗 msrc.microsoft.com👁 15 Views

Weak authentication in Active Directory Federation Services allows network spoofing.

Related
Detection
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-83674
14 Oct 202601:49
–circl
cve
CVE
CVE-2026-83674
13 Oct 202619:00
–cve
cvelist
Cvelist
CVE-2026-83674 Active Directory Federation Services (AD FS) Spoofing Vulnerability
13 Oct 202619:00
–cvelist
euvd
EUVD
EUVD-2026-99618
13 Oct 202619:00
–euvd
mskb
Microsoft KB
October 13, 2026—KB5126646 (OS Build 26100.33650)
13 Oct 202614:00
–mskb
mskb
Microsoft KB
October 13, 2026—KB5126651 (OS Build 17763.9376)
13 Oct 202614:00
–mskb
mskb
Microsoft KB
October 13, 2026—KB5126655 (OS Build 20348.5761)
13 Oct 202614:00
–mskb
mskb
Microsoft KB
October 13, 2026—KB5126868 (OS Build 14393.9612)
13 Oct 202614:00
–mskb
nvd
NVD
CVE-2026-83674
13 Oct 202619:20
–nvd
ptsecurity
Positive Technologies
PT-2026-112479
13 Oct 202600:00
–ptsecurity
Rows per page
Vulners
Node
OR
microsoftwindows_server_2016Range<10.0.14393.9612
microsoftwindows_server_2016Range<10.0.14393.9612
microsoftwindows_10_1607Range<10.0.14393.9612x64
microsoftwindows_10_1607Range<10.0.14393.9612x86
microsoftwindows_server_2025Range<10.0.26100.33650
microsoftwindows_server_2025Range<10.0.26100.33650
microsoftwindows_server_2022Range<10.0.20348.5761
microsoftwindows_server_2022Range<10.0.20348.5761
microsoftwindows_server_2019Range<10.0.17763.9376
microsoftwindows_server_2019Range<10.0.17763.9376
microsoftwindows_10_1809Range<10.0.17763.9376x86
microsoftwindows_10_1809Range<10.0.17763.9376x64

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13 Oct 2026 14:00Current
6Medium risk
Vulners AI Score6
CVSS 3.18.1
EPSS0.00713
SSVC
15