Search/CVE-2026-83906
● CVE — Medium

CVE-2026-83906

VendormicrosoftProductwindows 11 24h2, windows 11 25h2, windows 11 26h1, windows server 2025, windows 11 23h2, windows 11 26h2DiscoveredOct 13, 2026UpdatedOct 29, 2026

Incorrect implementation of authentication algorithm in Windows Shell allows an unauthorized attacker to perform spoofing over a network.

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CVSS v3.1
6.5 MEDIUM
EPSS
0.99%
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 30, 2026 → Oct 31, 2026
▼ 0.02pp
1.01% → 0.99% over 2 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionREQUIRED
ScopeUNCHANGED
ConfidentialityHIGH
IntegrityNONE
AvailabilityNONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Connections
7 relationships
Timeline
disclosure → media coverage
Oct 13, 2026
Disclosure — published as a CVE record. · last revised by NVD Oct 29, 2026