OnlyFm252
Windows SMB

CVE-2025-48802 — Windows SMB Server Spoofing Vulnerability

Important CVSS 6.5 EPSS 0.00743 2025-07 archive

Executive Summary

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

Overview

6.5
CVSS MEDIUM
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
Category Spoofing
Released Jul 8 2025
Last Updated Jul 8 2025
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.00743 — 0.49836 percentile
NVD CVSS 6.5 MEDIUM — matches MSRC

CVSS 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
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
None
INTEGRITY
High
AVAILABILITY
None
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 5.7

EPSS Score

0.00743
probability of exploitation in the next 30 days
0.49836 percentile - updated 2026-06-21
View on FIRST.org

Affected Products

7 affected products
Product KB Article Severity Impact Restart Required
Windows 11 Version 22H2 for ARM64-based Systems 5062552 (Security Update) Important Spoofing Yes
Windows 11 Version 22H2 for x64-based Systems 5062552 (Security Update) Important Spoofing Yes
Windows 11 Version 23H2 for ARM64-based Systems 5062552 (Security Update) Important Spoofing Yes
Windows 11 Version 23H2 for x64-based Systems 5062552 (Security Update) Important Spoofing Yes
Windows Server 2022 5062572 (Security Update) Important Spoofing Yes
Windows Server 2022 (Server Core installation) 5062572 (Security Update) Important Spoofing Yes
Windows Server 2022, 23H2 Edition (Server Core installation) 5062570 (Security Update) Important Spoofing Yes

Patches

3 patches
Article Type Restart
5062552 Security Update Yes
5062572 Security Update Yes
5062570 Security Update Yes

Known Exploits

Acknowledgments

Anonymous

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