Search/CVE-2026-83511
● CVE — High

CVE-2026-83511

VendormicrosoftProductwindows server 2012, windows 10 1607, windows 10 1809, windows server 2016, windows server 2019, windows server 2022, windows server 2025DiscoveredOct 13, 2026UpdatedOct 28, 2026

Weak authentication in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.

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CVSS v3.1
7.4 HIGH
EPSS
0.65%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
0
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Oct 29, 2026 → Oct 30, 2026
▼ 0.01pp
0.67% → 0.65% over 2 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityHIGH
Privileges RequiredNONE
User InteractionNONE
ScopeUNCHANGED
ConfidentialityHIGH
IntegrityHIGH
AvailabilityNONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Connections
8 relationships
Timeline
disclosure → media coverage
Oct 13, 2026
Disclosure — published as a CVE record. · last revised by NVD Oct 28, 2026