CVE-2025-48802
Windows SMB Server Spoofing Vulnerability
Improper certificate validation in Windows SMB allows an authorized attacker to perform spoofing over a network.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Windows SMB Server Spoofing Vulnerability
Improper certificate validation in Windows SMB allows an authorized attacker to perform spoofing over a network.
- Record
CVE-2025-48802- CVSS 3.1
- 6.5 Medium
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 - Weakness
- CWE-295
- Updated
- 2026-11-02
EUVDEUVD-2025-20601
Improper certificate validation in Windows SMB allows an authorized attacker to perform spoofing over a network.
- Record
EUVD-2025-20601- CVSS 3.1
- 6.5 Medium
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-32c4-pxr5-p8gv
Improper certificate validation in Windows SMB allows an authorized attacker to perform spoofing...
Improper certificate validation in Windows SMB allows an authorized attacker to perform spoofing over a network.
- Record
GHSA-32c4-pxr5-p8gv- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-295
- Updated
- 2026-11-02
NVD
Improper certificate validation in Windows SMB allows an authorized attacker to perform spoofing over a network.
- Record
CVE-2025-48802- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-295
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-48802 is a medium vulnerability (CVSS 6.5) in Microsoft Windows 11 Version 22h2, published July 8, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.90%, the 60th percentile. No source names a fixed version.