Vulnerability · Published Jul 8, 2025 · Assigned by microsoft
CVE-2025-48802Windows SMB Server Spoofing Vulnerability
Medium 6.5
In plain English
A medium-severity improper certificate validation in Windows 11 version 22H2 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 60% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.9%top 40.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Improper certificate validation in Windows SMB allows an authorized attacker to perform spoofing over a network.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 11 version 22H2 | 10.0.22621.0 – before 10.0.22621.5624 |
| Microsoft | Windows 11 version 22H3 | 10.0.22631.0 – before 10.0.22631.5624 |
| Microsoft | Windows 11 Version 23H2 | 10.0.22631.0 – before 10.0.22631.5624 |
| Microsoft | Windows Server 2022 | 10.0.20348.0 – before 10.0.20348.3932 |
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) | 10.0.25398.0 – before 10.0.25398.1732 |
Weakness: CWE-295 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C
References
- Windows SMB Server Spoofing Vulnerability vendor-advisory, patch