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Description

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

PUBLISHED Reserved 2025-05-26 | Published 2025-07-08 | Updated 2026-02-13 | Assigner microsoft




MEDIUM: 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C

Problem types

CWE-295: Improper Certificate Validation

Product status

10.0.22621.0 (custom) before 10.0.22621.5624
affected

10.0.22631.0 (custom) before 10.0.22631.5624
affected

10.0.22631.0 (custom) before 10.0.22631.5624
affected

10.0.20348.0 (custom) before 10.0.20348.3932
affected

10.0.25398.0 (custom) before 10.0.25398.1732
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2025-48802 (Windows SMB Server Spoofing Vulnerability) vendor-advisory patch

cve.org (CVE-2025-48802)

nvd.nist.gov (CVE-2025-48802)

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