CVE-2025-48802 - Windows SMB Server Spoofing Vulnerability · CoreCVE

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MEDIUM

Windows SMB Server Spoofing Vulnerability

Published Jul 8, 2025

6.5

MEDIUM

CVSS 3.1

EPSS 0.83%

Description

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

Affected products

Vendor Microsoft Product Windows 11 Version 23H2 Default
n/a
- Version
  10.0.22631.0
  Status
  affected
  Constraints
  <10.0.22631.5624
Vendor Microsoft Product Windows 11 version 22H2 Default
n/a
- Version
  10.0.22621.0
  Status
  affected
  Constraints
  <10.0.22621.5624
Vendor Microsoft Product Windows 11 version 22H3 Default
n/a
- Version
  10.0.22631.0
  Status
  affected
  Constraints
  <10.0.22631.5624
Vendor Microsoft Product Windows Server 2022 Default
n/a
- Version
  10.0.20348.0
  Status
  affected
  Constraints
  <10.0.20348.3932
Vendor Microsoft Product Windows Server 2022, 23H2 Edition (Server Core installation) Default
n/a
- Version
  10.0.25398.0
  Status
  affected
  Constraints
  <10.0.25398.1732

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Windows 11 Version 23H2

n/a

Version	Status	Constraints
10.0.22631.0	affected	<10.0.22631.5624

Windows 11 version 22H2

n/a

Version	Status	Constraints
10.0.22621.0	affected	<10.0.22621.5624

Windows 11 version 22H3

n/a

Version	Status	Constraints
10.0.22631.0	affected	<10.0.22631.5624

Windows Server 2022

n/a

Version	Status	Constraints
10.0.20348.0	affected	<10.0.20348.3932

Windows Server 2022, 23H2 Edition (Server Core installation)

n/a

Version	Status	Constraints
10.0.25398.0	affected	<10.0.25398.1732

Remediation

No remediation recorded yet.

Weaknesses (1)

CWE-295

Improper Certificate Validation

References (2)

https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-20601
Advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-48802
vendor-advisorypatchVendor Advisory

Link	Providers	Tags
https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-20601		Advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-48802		vendor-advisorypatchVendor Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner microsoft

Published Jul 8, 2025

Updated Feb 13, 2026

Reserved May 26, 2025

Link CVE-2025-48802

CISA Vulnrichment

Updated Jul 9, 2025

Status Analyzed

Modified Jun 17, 2026

Link CVE-2025-48802

Severity n/a

Public date n/a

Links CVE-2025-48802

Assigner microsoft

Published Jul 8, 2025

Updated Feb 13, 2026

Exploited since n/a

Link EUVD-2025-20601

EUVD-2025-20601