Improper Certificate Validation in Microsoft Windows SMB Server



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2025-48802
CWE-ID CWE-295
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Windows Server
Operating systems & Components / Operating system

Windows
Operating systems & Components / Operating system

Vendor Microsoft

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Improper Certificate Validation

EUVDB-ID: #VU112598

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2025-48802

CWE-ID: CWE-295 - Improper Certificate Validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to improper certificate validation in Windows SMB Server. A remote user can perform a spoofing attack on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows Server: 2022 10.0.20348.202 - 2022 10.0.20348.3807

Windows: 10 1607 10.0.14393.10 - 11 23H2 10.0.22631.5472

CPE2.3 External links

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-48802


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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