Home/CVE/Improper certificate validation in Windows SMB allows an authorized attacker to perform spoofing over a network.
CVE

CVE-2025-48802

Improper certificate validation in Windows SMB allows an authorized attacker to perform spoofing over a network.

Improper certificate validation in Windows SMB allows an authorized attacker to perform spoofing over a network.

MEDIUM · CVSS 6.5 EPSS 0.00589
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-295Improper Certificate Validation
▤

Affected Products & Versions

4
microsoft windows 11 22h2< 10.0.22621.5624
microsoft windows 11 23h2< 10.0.22631.5624
microsoft windows server 2022< 10.0.20348.3932
microsoft windows server 2022 23h2< 10.0.25398.1732
▣

Scoring & Timeline

6.5
MEDIUM · CVSS v3.1 · secure@microsoft.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD08 Jul 2025 · 05:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

1
msrcCVE-2025-48802Spoofing
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